Definitely see it. You'll probably like it more than she will ... there are lots of inside jokes meant for humans rather than kids ... but she'll like it.
My husband & I took our 14 year old girl and 10 year old boy to see Enchanted over the weekend and we all loved it.
Most interesting was the audience demographics. I expected mostly young families. There were senior citizens, couples on dates and teenagers. The showing we attended was sold out. People are starved for fun entertainment.