I'm so sorry you're going through this. Know that there are people out there who care, and those who don't (like your aunt) don't matter. Think about the people in your life. Who are the people who are adding benfit to you and making you feel good? Keep them around and invest more into those relationships. Who are the people in your life who are negatively impacting you? Stop investing into those relationships, cut them off, and don't allow their disrespect in your life.
I hope you never feel ashamed of your Indigenousness, I'm white but I see being Aboriginal as such a powerful thing to be proud of. You are the decendant of a long line of survivors who have braved colonisation and genocide and forced extintion and yet you are here. Still standing, still alive. You are powerful, because you come from powerful.
As for a role model, write off your aunt, you don't want to be like her anyway, bitter predujuced and petty. Instead, is there an Aboriginal group/community/online page you can join? They probably know and are willing to teach you to be proud of your herrritage more than your aunt will ever. If you are still at school, maybe talk to your indigenous officer to see if they can network you up with a mentor or some quality resources.
also, talk to your mum and see if she is able to provide you with suppport, it sounds as if you are both in this situation together.
