Help!!

Right so I’m turning 15 in two months and my mum is not allowing me to have a Facebook account the legal age to have an account Is now 13 so I can not understand why I can’t have one she says it because she fears I will get cyber bullied or groomed online even though I am quite grown up for my age and I don’t put up with bullies due to my past and i wouldn’t add anyone I don’t know...

Please can you comment if you think I should be aloud it and if so reasons in which to talk my mum into it if not why you agree with her??