I'm so sorry! I hope your dd will be ok.
Last week I ran over my uncles dog and he died a couple of days ago. He was laying behind my van and I didn't see him when I backed out. It was horrible, I felt so bad! I stopped as soon as I heard him yelp but I had crushed his back legs. He was very old and very sick so my uncle wan't upset and told me not to worry about it b/c it was his time anyway, but that doesn't really help, I still feel bad! I think my kids were more upset about it than my uncle though.