Why doesn’t my aunt let me do anything?

My aunt doesn’t let me do anything. She doesn’t let me get my license and tells me “you won’t handle the written process” and I’m thinking how does she know that. She also doesn’t let me do things like cooking and freaks out if I want to make something without her help. Last week I wanted to travel down south and she made a huge deal about it and said “you’ll ruin your life” all because I wanted to travel without her. It’s like she wants me attached to the hip with her and I need my space. I tell her that all the time and she won’t have it. She always says “you won’t handle or cope doing those things” she doesn’t know that, she just thinks I won’t be able to do anything without her. She’s wrong, but telling her that will only cause arguments. I want to do things other people get to do who are my age, without someone freaking out and getting all upset and claiming I won’t handle any of it. I just want to live my life. I’m old enough to do all of these things. I just want to know why she doesn’t let me do any of it..