Would it be worth going back to the nursery and taking a picture of the plant in question? That might help get a positive ID. If it really is a problem, then you could point out to the nursery that there is an issue (and maybe help someone else from doing the same thing.) Glad you both seem OK!
I'm wondering if it could have been something else. If she was allergic to it, I would think she would have broken out in hives. The fact that you didn't get sick Nyboy makes me think that.