My aunt left her bike here behind, so we use it for a while. My mom uses the bike sometimes, but I use it more often because I don't have a bike at the moment. (my old one is too small & not even put together after around 2/3 years) Once when I used it, I forgot to lock it up with the chain thing. My mom figured out and told me to lock it, I forgot, so then she got mad and locked it herself. Then I was told I wasn't allowed to use it ever again after that. How do I convince her to let me use it again????