She can watch whatever she wants to watch.
I'm not a fan of MLP but I do like her pony art.
I think it's very rude that your yelling at her to watch Dragon Ball Z. If I was you I would say something for nicer then "I know your girl... but YOU NEED WATCH DRAGON BALL Z, & stop fapping to FUCKING Ponies!" cause that's pure rude.
I mean how would you feel if I said that you needed to stop fapping over Dragon Ball Z?

I'm sorry, but just after seeing this i want to let you know, she can do whatever she wants, whatever that may be and you telling her to stop doing something isn't going to change it, i hate it when people like you go around and yell at everyone because they did something that you didn't like. Other people may like it, the person that did it likes it, shes not going to change who she is or what she did because you don't like her, if you don't like her art go find some somewhere else. I like her art, and so do her THOUSANDS of watchers, and your one person that complains, do you think she will care?