hmm. since you rescued her, and she was in an abusive home, she may have never even see a toy before.
my dog Cody didn't play with toys very often. We thought the squeaky ones may have hurt his ears. he did play tug with a rope once in a while. Actually, the only time i ever saw him play with toys regularly was around other dogs playing with toys.
maybe if she's good with other dogs, bring her around another toy-obsessed dog, and see what happens?
i'd also give her a little while to get used to her new home