https://civitai.com/models/247500
0.8-1.0 strength.
Trigger word is "retsu unohana" and "single braid" is mandatory.
Add "white coat, black kimono, black skirt" for her typical look.
The braid is somewhat inconsistent, especially with different outfits. Adjusting the weight may help.
"Mature female" is helpful on some models.