From what I understood your aunt is either a toxic person or she just didn't know you defended yourself. Yea I understand, you gotta have your own back, neither do I like fighting but when you don't have anything else to resort to then just let it all out and send them to hospital :D
The strongest people are the one who got hurt, and still carry a big heart full of love to share, because they didn't break under bullies and toxic people. :) I love your personality thank you for sharing I really appreciate it :)