This was by request of Hermitman. It's a modified version of Siyuri's work. I've updated it to work with game versions 2.2+.  Shouts out to them for taking the time make the OG mod "Shadowheart Morrigan and Cassandra Voices for WOTR" in the first place.

Note that there are 3 distinct voicepacks included in this that replace the following vanilla .BNK files - 

Shadowheart from Larian's Baldur's Gate 3.

• (Replaces Female Pious Voice)
• Appears as PC_Female_Pious_GVR_ENG.bnk in 7zip file.
  

Cassandra Pentaghast from Bioware's Dragon Age Inquisition.

• (Replaces Female Reserved Voice)
• Appears as PC_Female_Reserved_GVR_ENG.bnk in 7zip file.
  

Morrigan from Bioware's Dragon Age Origins.

• (Replaces Female Pragmatic Voice)
• Appears as PC_Female_Pragmatic_GVR_ENG.bnk in 7zip file.
  

TL;DR

Installation
1) Navigate to "SteamApps\common\Pathfinder Second Adventure\Wrath_Data\StreamingAssets\Audio\GeneratedSoundBanks\Windows"
2) If using the Morrigan voicepack, backup "PC_Female_Pragmatic_GVR_ENG.bnk"

• If using the Cassandra Pentaghast voicepack, backup "PC_Female_Reserved_GVR_ENG.bnk"
• f using the Shadowheart voicepack, backup "PC_Female_Pious_GVR_ENG.bnk"
  

3) Use 7zip to unzip the file and drop it into the same folder

Not a major issue or anything, just when using, you may have to lower your ingame "Music" audio to hear the voice to like 90 or 80.  Not sure what changed volume-wise, but ingame music drowns out character voices. Noticed that when testing a new char in Kenabres.
Also note that the the preview voice in the character creation screen will sound like the default vanilla voice. Voice mods work everywhere but there, so wait till your ingame first before panik.

Uninstallation
If using the Morrigan voicepack, restore PC_Female_Pragmatic_GVR_ENG.bnk in the audio directory above

• If using the Cassandra Pentaghast voicepack, restore PC_Female_Reserved_GVR_ENG.bnk in the audio directory above
• If using the Shadowheart voicepack, restore PC_Female_Pious_GVR_ENG.bnk in the audio directory above
  

("SteamApps\common\Pathfinder Second Adventure\Wrath_Data\StreamingAssets\Audio\GeneratedSoundBanks\Windows")

Some additional information
I was originally asked to update only the Shadowheart mod from the pack, but felt wrong not to do the whole thing. Beyond that the voicepacks are all just plain
good.

Process was a carbon copy of what happened/was done for the "Kayle (Brave Female) - Updated" mod I pushed yesterday.

However, big difference is that as opposted to the 110 audio files with Kayle, these other voicepacks had the following -

Morrigan - 111
Cassandra Pentaghast - 106
Shadowheart - 134

Below is basically what I changed/swapped (this is a long list).

For future reference below. The "B" is in reference to the original soundank (i.e..."PC_Female_Pragmatic_GVR_ENG" for Morrigan) soundbank, whereas the other lettered lines (i.e..."M" for Morrigan, "C" for Cassandra and "S" for Shadowheart) represents the sounds they were replaced with from Siyuri's original mod "Shadowheart Morrigan and Cassandra Voices for WOTR".  Just to reiterate, the labels/filenames will still appear as they do for "B" if you open the soundbank. I also decided to add the dialogue swapped via text, not sure if this would ever be useful to anyone but I like documentation. 

Morrigan

• "I tire..." (Fatigue 02)
  

B- 1043716737.wem
M- 800196111.wem

• "I am overexerted"
  

• "Hiyaaah!" (Attack Power 07)
  

B- 122950409.wem
M- 147568765.wem
"I will destroy you where you stand!"

• "All according to plan~" (Move 10)
  

B- 221806076.wem
M- 148575051.wem

• "Look here"
  

• "What a find~" (Discovery 01)
  

B- 285291643.wem
M- 608139793.wem

• "Tis remarkable"
  

• "Enemy approaching!" (Battle Start 02)
  

B- 336914667.wem
M- 1004983397.wem

• "Here they come!"
  

• "Huuuuaaah!" (Attack Power 08)
  

B- 348311550.wem
M- 281021618.wem

• "Errrrruah!"
  

• "Unnaah!" (Attack Power 06)
  

B- 404838691.wem
M- 657157150.wem

• "Blast and damnation"
  

• "I'm...wounded..." (Low Health 01)
  

B- 461048984.wem
M- 462377212.wem

• "I'am wounded"
  

• "Huah!" (Attack Power 05)
  

B- 504394531.wem
M- 922109536.wem

• "Errrrouah!"
  

• "Hooah!" (Attack Power 03)
  

B- 519072034.wem
M- 91588884.wem

• "You will learn to fear me!"
  

• "This will hurt" (Attack Order 05)
  

B- 528994530.wem
M- 218298502.wem

• "Kill them, and let's be on our way"
  

• "No mistakes" (Select 16)
  

B- 566269309.wem
M- 863159914.wem

• "Tell me something I do not know"
  

• "An expected outcome" (Char Crit 01)
  

B- 593971967.wem
M- 350383744.wem

• "Hahaha, run while you can!"
  

• "Ouaah!" (Atack Power 04)
  

B- 616542620.wem
M- 393756961.wem

• "Hahaaa!"
  

• "Errouah!" (Attack Power 02)
  

B- 825410666.wem
M- 886515158.wem

• "Aheh, I have no need to force anything"
  

• "Someone else would make better use of this" (Can't Equp 01)
  

B- 840690833.wem
M- 562466110.wem

• "I have no use for such a thing"
  

• "I tire..." (Fatigue 03)
  

B- 953233711.wem
M- 470140203.wem

• "Errrmpf, I shall be feeling that for several days to come"
  

• "Uoooah!" (Attack Power 01)
  

B- 993555224.wem
M- 89686718.wem

• "Huah!"
  

Cassandra

• "Aim carefully!" (Attack Order 04)
  

B- 151629083.wem
C- 1041980318.wem

• "Stay on guard!"
  

• "Haaaaaah!" (Attack Order 09)
  

B- 154229992.wem
C- 159192008.wem

• "Don't relax your guard"
  

• "Let us be careful" (Move 11)
  

B- 213508110.wem
C- 361899980.wem

• "It seems anything is possible these days"
  

• "My skill exceeds yours" (Char Crit 07)
  

B- 366815070.wem
C- 762395468.wem

• "We shall see about that!"
  

• "Hrreoooenn!" (Attack Power 01)
  

B- 375987435.wem
C- 482151191.wem

• "Aouaaaggh!"
  

• "I failed" (Check Failed 04)
  

B- 436656401.wem
C- 496658025.wem

• "You conniving little shit"
  

• "Hrrrrnaaah!" (Attack Power 04)
  

B- 591469460.wem
C- 478733760.wem
"Watch out!"

• "Errrneerneh!" (Attack Power 07)
  

B- 593963253.wem
C- 697301952.wem

• "Haurh!"
  

• "Ha-aaaaah!" (Attack Power 02)
  

B- 696584874.wem
C- 829190064.wem

• "Errrraourrrrh!"
  

• "Let us bide our time" (Select 07)
  

B- 741808870.wem
C- 481101268.wem

• "Do not suggest I am without reason"
  

• "I feel tired" (Fatigue 02)
  

B- 800094171.wem
C- 195529436.wem

• "I'm falling back!"
  

• "I feel faint" (Low Health 03)
  

B- 921360668.wem
C- 720584211.wem

• "The damage is more extensive than I thought"
  

• "No contest" (Char Crit 02)
  

B- 965886637.wem
C- 558553106.wem

• "Maker take you!"
  

• "I feel tired" (Fatigue 03)
  

B- 972018561.wem
C- 639384105.wem

• "That's enough"
  

Shadowheart

• "A rest...would be welcomed" (Fatigue 01)
  

B- 124508443.wem
S- 422382393.wem

• "Should get some rest, I need to keep sharp"
  

• "Hold on...just a little more" (Low Health 01)
  

B- 158249125.wem
S- 90501746.wem

• "I don't feel too good"
  

• "Contemplate on your mistakes" (Char Crit 01)
  

B- 242868168.wem
S- 333234083.wem

• "Hah aha hahaha"
  

• "We shall overcome" (Attack Order 05)
  

B- 248862323.wem
S- 544985140.wem

• "Not a pleasant thought but our reality nonetheless"
  

• "I do not find this to be useful" (Can't Equip 02)
  

B- 289138552.wem
S- 332759603.wem

• "Just a trick, surely"
  

• "Huuaaaah!" (Attack Power 06)
  

B- 366162650.wem
S- 1065412808.wem

• "Really you lot, I might weep with pride"
  

• "Our path leads on" (Move 04)
  

B- 515440772.wem
S- 111423656.wem

• "We did the right thing, so let's keep moving"
  

• "I will see this through" (Select 18)
  

B- 662943579.wem
S- 444850862.wem

• "All we can do is try I suppose"
  

• "Hyaah!" (Attack Power 05)
  

B- 892397833.wem
S- 419975026.wem

• "Uuugh"
  

• "Hyuuneeh!" (Attack Power 04)
  

B- 897036645.wem
S- 592669872.wem
"Back off freak!"

• "Houuu-Ah!" (Attack Power 01)
  

B- 897682752.wem
S- 252040307.wem

• "Perhaps I'll leave a parting gift lodged in your heart"
  

• "A rest...would be welcome" (Fatigue 03)
  

B- 989875439.wem
S- 459118988.wem

• "So tired"
  

• "Stand with me" (Battle Start 08)
  

B- 994373392.wem
S- 312266903.wem

• "Time to fill some graves"
  

Lastly, shoutout to the voice actresses Jennifer English (Shadowheart), Miranda Raison (Cassandra Pentaghast) and Claudia Black (Morrigan). As well as the respective gaming studios Larian Studios and BioWare for the banger audio.