How do I convince my mom to let me buy my own pet rabbit.?

[rabbit person76]

I really want a new rabbit and my mom keeps telling me that I cant get one. I told her that I have enough money for toys, the cage, the bedding, food, litter, a water bottle, etc[I do have enough money.]I have already told her that she wouldn't have to pay for anything except for half of the vet bill each year. And that I would play with him\her each day, make sure they get enough exercise, feed them, make sure they have water, etc. And at first she said no because of our dog (a lab pitbull mix[ she is very nice by the way. She only barks at squirrlels that are outside. She has also has dog friends that are much smaller then she is( some smaller then rabbits) and she didn't even try to hurt them.]) So I explained to her that our dog isn't the problem.Now whenever I ask her she just says no because I don't want another pet. I'm going to try to explain to her that it wouldn't be her pet it would be mine. But if that doesn't work I have no idea what I am going to do.Please,INeedSomeAdvice