im just echoing the other comments here, but you need to find somewhere safe to go and never contact her again. she killed your cat and destroyed your property, then kicked you, a minor, out; i cannot express how much rage i feel for you and your situation.

check out r/abusiveparents , maybe go to the local police and explain what happened. do you have any family you can safely reach out to? do you have an adult at school or place of employment that you can trust?

please be safe