What should I do?

My best friend has a myspace. Well she doesnt have a computer. She used to use mine but she isnt allowed anymore because her dad is sur crazy and if she talked to someone or someone talked rude to her, her dad may try to sue them and so they would take our computer to be checked if that happened & we would lose it so she isnt allowed to use it anymore. Well she is always asking me to check her myspace & reply to ppl & add ppl and I am not supposed to and I dont want to anymore. I am sick of being asked to add ppl for her and messaging them 4 her when she isnt even allowed to c them herself. I dont want to be rude but I dont want to check it anymore especially since my parents dont want to lose the computer. So should I just delete it? If so how would I tell her? I need help I dont want to hurt her but I cant risk something happening to the computer.