So it seems like both the vendor and daz QA team managed to miss some pretty apparent issues with Xiao Mei.
1. Her morph is auto-applied to any G8.1F you load up.
2. Her character preset only loads her head morph, not the body nor the master morph.
Took it upon myself to edit said files in notepad and fix these issues.
Hopefully I'm not breaking any forum rules by sharing just these two fixed files, if so then perhaps a mod can edit the post and/or let me know.
You'll obviously need to have Vo Xiao Mei installed, the zip contains only the two edited files with their respective proper folder structure, so you should be able to just unzip the contents on top of your daz3d library and overwrite the current files when prompted.
https://mega.nz/file/6hYAXLhS#VTj-Xv6hLNWh7u2-XlVMgAgMdLCqpAH7OnrLYtzJzHY
Have a good day and enjoy not having Xiao Mei's head on every 8.1F model you load 😀