You can't blame yourself for something that was inevitable. This has happened to so many of us and though it makes us feel terrible, it's accidental. Several years ago I too hit a cat and she ran away. I pulled off to the side of the road and knocked on the door of the nearest house and the woman said "Yes, that was my cat. You hit my favorite cat and she's pregnant!" That really upset me even more but I told her "If she's your favorite and pregnant, then why are you letting her roam where something like this could happen? I'll do my best to find her w/your help. I could've just kept going but I want to make sure she's ok." The woman told me "Just leave." So I did. I cried for days but I had to accept the fact that it truly wasn't my fault. And this wasn't your fault either. So dry your tears and know that I and all other PTers are feeling your pain and are sending out prayers for your peace of mind. The beautiful orangie is now at rest and she's already forgiven you.