weight could be 0.6 - 0.8( makes it flexible for styles ) - trained for 768 or higher - to keep close to her old design try any of these - or put in Neg to reduce chance - SFW/NSFW
may need to add 3d, or realistic, in neg for certain 2d/anime styles due to having more 3d image training - or lower weight for less influence - higher the versions
face/body
Yuna, black ponytail, brown eyes,
Outfit
red kimono, black headband, pants, - boots or sandals, - suggest arrows, bows, in NEG
the game takes place in 13th century Japan, so adding it may help with accurate settings - but of course do whatever
her attire may be missing some prompts due to being specific, but is a rather simple attire - she may spawn tools/equipment on her hip or belt,