Musical Blues

I want to do the musical at school, but me mum won't allow me to. She keeps saying how me elder sister did the musical her freshman year and it negatively impacted her grades. What she doesn't know is that I'm NOT me elder sister! I have to do extra curricular activities to graduate and she won't let me do anything! I can't play football. I can't play volleyball. I can't do the musical. When it comes graduation day, and they say I can't graduate, it'll be all her fault.