my cat gave birth but couldnt take care of one kitten so we gave it away, we got her back and now the cat is 3 month old but she is very vicious and will hiss and growl to anyone that comes near her. She has been with us for three days and her behaviour has not changed. Pet's info: Cat | Domestic Shorthair | Female | 4 months and 2 days old

Unfortunately, kittens that were bottle fed can be aggressive and not as friendly. You can try to put some feliway diffusers in the House and spray her sleeping areas. Feliway is a cat pheromone which can sometimes help to calm them. Also, give her more time. She has been moved from multiple house in her short life and now around new cats (they don’t usually remember family). This can be stressful and can take weeks for them to acclimate to. I hope this helps and she starts to get use to her new living conditions.

Poor Cindey! Does she have any fights or disagreements with your other cat? Cats can have very negative body language toward other cats sometime, especially if they are the dominant type, and this could be putting the kitten on edge. You may want to try to put out some Feliway diffusers throughout the house. Feliway (or a similar product in your area) is a cat pheromone that only cats smell which can help to calm some cats. Unfortunately, it doesn't work on everyone. Since she is so young, I would also recommend to have your vet take a look at her. Your vet will be able to ensure she has no pain anywhere and that she is otherwise healthy. Your vet may decide to put her on some anti-anxiety meds to help calm her. I hope this helps and she starts to feel more comfortable in her own environment really soon.