Might be getting some Ratties!

[3muttsandaboston]

Maybe take her to a petstore and let her hold a rat. Thats how I made my mom like them. I forced her to hold one at a pet store. lol

[Chilli]

I was going to suggest letting her meet a rattie, aswell. :]

Another thing that might help is if you point out that she doesn't have to even see the rats if you keep them in your room. Thats what I told my mum, and it helped to get her to give in. Now she just pretends like they don't exist.

Good luck!