I have figured out why Piper's face collapses if AsianFace.esp is not loaded.
But to do that I need a little help from you.
First start FO4Edit, select iPolyFacesCompanionPlugin.esl and choose Piper.
Go to the right side of the screen.
Scroll to the bottom and navigate to FMIN - Facial morph Intesnstiy.
This modification is only needed for the piper.
If you are adapting this preset to a player or other companion, you will most likely not need this method.
Remove 2.000000.
AsianFace.esp did not collapse the face because Facial morph Intesnstiy was removed.
By using FO4Edit, you can save one esp.
FO4Edit screen
venb and light mod
NAC X - NATURAL AND ATMOSPHERIC COMMONWEALTH 10 - Legacy Edition (Only milky is used for effects.All camera noise, blurring, etc. are off.)
REACTOR - A FALLOUT4 ENB (V1.3.4)Very important for appearance. In different environments her appearance will be different.
Lightweight Lighting - A weather and interior lighting overhaul
Required mod
F4SE
LooksMenu
Looks Menu Customization Compendium
Caliente's Beautiful Bodies Enhancer -CBBE-
HiPoly Faces REDUX (Seamless Kit - CBBE - TWB - FG)
HiPoly Faces REDUX - Asian Face Enhanced Patch Install this patch in the HiPoly Faces REDUX options. It is required.
The Eyes Of Beauty Fallout Edition
Unfair Skin <skin default-K Makeup>
femshepping and radbeetle's KS Hairdos Conversions
Unfair Skin face textures should be 1K, 2K breaks everything.
Recommend
NAC Skin Tone Fix
Photo Light
Fallout 4 High Heels System
IceStorm's Shoes
When using adjusted skeletons
SSF - Skeleton Style Framework
load order
HiPolyFacesCompanionPlugin.esl
LooksMenu.esp
CBBE.esp
HiPolyFaces.esp
The Eyes Of Beauty.esp
LooksMenu Customization Compendium.esp
KSHairsFemsheppingRadbeetle.esp
SkeletonStyleFramework.esp
Lightweight Lighting.esp