My dog survived the F5 that recently hit Joplin, MO. She was in the backyard. My entire neighborhood,?

including my home, is now leveled. I have so much guilt that I couldn't get to her and she had to go through that outside. I have NO IDEA how she survived, with the exception of her thigh being ripped up. She acts completely fine, but my guilt has me on an emotional roller coaster. How does a dog a cope with tragic events like this?