As Dia is not a playable character (yet), the dataset for her Obliviant outfit is just based on screenshots from cutscenes, and her plugsuit outfit is just screenshots from her in the tank, so not great variety which results in a slightly rigid model. May update later of we get her in ingame as a playable character.
Diatfd is her first outfit trigger. Add single horn mask, obscured face, if you want her mask version. The mask is a bit hit and miss.
Diaplug is her statis tank outfit. Can have her with grey hair or black hair.