Awww how cute! Where are you getting her from? If you can I recommend getting her a friend, rats are extremely social creatures and need a same sex buddy. They can get depressed, angry, and lonely without another rat.
If you have any questions about rats at all, please don't hesitate to shoot me a message, I have a lot of experience with them

They need a large cage, a very good home made diet (Pet store foods are really really bad for them, not nutritionally complete and most of the food in them they can't even digest) they are prone to respiratory problems and the females can get tumors as they get old.
Sorry for the info explosion

That's a really cute drawing
