What exactly did she say? The amount of vitriol she was spewing toward your family makes a difference.
People are jumping on you for snooping...but remember this chick is lying to your face.....EVERYDAY. and shes seems fairly good at it.
If shes calling them all out of their name, address it. If she doesn't like your fam, fine. But she needs to be upfront with YOU about that. Her bsing you like this should make you question everything shes said or done. If she cant be honest with you about this...screw her.
I cannot STAND my wifes family but its no secret to her. I let her know how I feel, but I put on the best face I can when im around them. But I wouldn't cry if the jumped off a cliff. Her not liking them isnt a problem to me, its her not being upfront with you about it that would alarm me.