She's was Shredder's, now she kick's ass and sometimes make out with a Turtle (Leo).

Use her with blue eyes or brown eyes, both are canon, TMNT is kinda funny, some mutant's are not humans turned into animals, but animals turning into anthro form (they get human sapience) so some of then are more animal like than other's.

She don't have visible breasts (it's a avian) and use a small piece of cloth (maybe it was a karate GI) to cover whatever she's has in her pelvis.

More info

https://turtlepedia.fandom.com/wiki/Koya_(IDW)