Hey this is my first time posting.so I've just got two kittens (brother and sister) who are about 10 weeks old now. Male kitten has always used litter box and is very approachable and pleasant.Female kitten will not use litter and cowars when being approaches and doesn't seem to like being petted.The male is the dominant one he uses her litter box, eats her food and picks on her a lot. Could this be the reason she acts strange? I've had them about two weeks now I've changed litters and nothing is working please help