to keep close to her old design try any of these - or put in Neg to reduce chance - SFW/NSFW
This is focused on her base look (not prime or other skins) - however its using her alterative helmet - you can try - bald, mouth mask,
may need to add 3d, or realistic, in neg for certain 2d/anime styles - or lower weight 0.8 - 0.6
For appearance/for attire
Wisp, - - - - - - - - pelvic curtain, -- scarf, or hood,
since her alternative helmet is close to a face - you may need to add mask, or helmet, hood up, in prompt, and face, lips, in neg
adding face or eye prompts(or detail) may spawn a human face
she does not have feet (normally) so she floats in the air but im sure it can be prompt somehow
adding clothing options may make character more human
adding body size enhancements or reduced effects is easier
certain styles may force eyes or face - so use of NEG may be important
adding colors in neg may help keep consistent color scheme