Lil creepypasta story thingie I'm writing yayay

July 9th, 1987 We found it on the side of the road just standing there. It had no reaction to us approaching it. It was calm and cooperative. We did not need to cuff it or anything. It was seemingly human but it had animal like characteristics. Pointed ears like that of a fairy, the tail of a beaver, another set of ears that looked like a rabbit's except they were limp and they hung over its face. Its hair was normal, but it stayed in 2 messy ponytails and had long bangs that hung over its eyes. It also wears a stuffed bunny on its back, no straps or adhesive to keep it attached. It just, floats. It had the clothing of a normal human and a fair sense of style. Its mouth is also seemingly human. It stays in a slight frown showing no sign of emotion. It doesn't open but it has 2 working lips. We wonder if it also has human like teeth. We left it in a containment center for further examination. It sat in a corner for a while, messing with the fungi that had started growing in the corners of the containment center. After about half and hour, it escaped. No one seemed to realize it had gotten out. It ended up in the animal center and had taken a liking to the cream colored rabbit we had named "T-22." After is was found it was brought back to the containment center. It became aggressive when we tried to take T-22 from it. Its mouth didn't open, but it made sounds of a low growl. We decided it was seemingly harmless and left T-22 with it and put it back in its containment center. We decided to call it XX2A-405. We don't know what it is. It has the body type of a teenage girl around 20-something years old. Even thought it looks like its around 20 years old, it shows brain activity from all the way back in 400 B.C. It communicates through American sign language and written words. It understands the human language and can even write in Japanese. When asked it has no memory of the time period. It also does not remember anything about itself, it does not know it sex, age or even species. It recalls no family members whatsoever. It has taken a liking to the fungi in the containment chamber and T-22. It has not harmed itself, T-22 or any of there researchers it has interacted with. It walks on 2 legs and has the limbs and other ligaments that are of a human...but it isn't human. What is it?