About 6 months ago I got a budgie that was not being cared for properly from a friend. We think her age is around 2. She was kept in a cage with one perch and a mirror and had little human interaction. Since we have gotten her she had moved in with my other bird who is a cockatiel and they get along really well. Unfortunately, my budgie is still pretty scared of humans and is very reliant on her mirror. She can't really fly or walk very well. She is definitely happy because she loves to sing along to music and chirps a lot. I want to get her to the point where I could hold her and she could come out of her cage. Is it possible? Should I take out her mirror so she will interact with the real world more? Or should I just leave her be because she seems pretty happy?