I got a reply from her. She said they liked my Illustrations a lot, but they currently don't have any orders/commissions I could do, but she would appreciate if I e-mail her regularily to check back.
I'm not quite sure If that's a good thing - I guess I'll just have to wait. I am currently researching more children's books publishing houses, trying to find some that accept e-mail applications before I print anything and send them. (Prints usually lack quality) But I sure will contact most of them, even by regular mail if I have to.