My name is Onix Matilda!

an international one!
5 months ago, my sister was living in Vancouver, Canada and she adopted Onyx from a shelter. 3 months later, my sister’s circumstances changed and she went to live in Europe. Onix flew from Canada to the US with my son (almost 3 months ago).
I was hoping to foster Onyx until my sister settled down…but my sister is now living her life and I have been left with Onyx.
Unfortunately my 3 adult cats do not accept Onyx at home. I had them separated for about a month, introduced them gradually, tried everything I could so they could get along, and even though it has gotten better, I feel sorry for my cats, they are stressed, constantly looking over their shoulder and I think is not fair on them
Onyx has been through a lot, however, recently she has been having some fun and relaxation at home with me, she is very funny, and likes playing a lot. My poor cats are very stressed though, that is why I want to rehome her.
She has gorgeous green eyes!
She is 4y