Yes she eats well, drinks, uses liter box only took her a day or two. She doesn’t have any behaviors yet. Yes he’s neutered and I plan on getting her fixed also.Since you have another cat, maybe it'll be ok. He can teach her cat manners. I've seen terrible results from single kittens taken too young though. Nobody to teach them cat manners.
Is she eating well? Drinking? Using the litterbox?
Is your male cat neutered?