Trained on PonyDiffusionV6XL. Contains her default appearance and 3 FEH alts:
Default appearance: defKarla, long hair, white kimono, cleavage, large breasts, long sleeves, sash, side slit, knee boots, yellow footwear
Resplendent (FEH): resKarla, long hair, hairclip, black dress, high collar, detached sleeves, wide sleeves, black gloves, knee boots, black footwear
Spring Reveries (FEH): sprKarla, long hair, playboy bunny, detached collar, large breasts, cleavage, short sleeves, shoulder cutout, see-through sleeves, white gloves, see-through skirt, blue pantyhose, high heels, gold footwear
Might give her multiple sets of ears on some prompts, adding "blue rabbit ears" might help.
Sun-Piercing Steel (FEH): sunKarla, long hair, hair ornament, neck ring, white dress, strapless, cleavage, large breasts, arm warmers, single sleeve, pelvic curtain, print pantyhose, sandals
Usually doesn't gen her single sleeve right, if at all.
Her eye color varies in the official art for each FEH alt. Sometimes they're grey, sometimes more brown, sometimes a bit blue. Just give her the eye color you want if the inconsistency bothers you.