My cat got killed by a car!

It was just weird all the way around because she had an appt for shots and that is never fun. Of course she was super upset afterward and was acting kinda loopy so I kept her inside. She was always an indoor cat and afraid to go outside, but a year ago I got a doggy door for my dog and she only recently figured out how to use it. So after being inside most of the evening, acting strange (from the shots I assumed) she snuck out the door and around 10pm a bunch of neighbors came running over to tell me she was hit by a car. She died instantly.
She was my first cat; I was always an "anti-cat" person. But 3 years ago my daughter rescued her from the jaws of a fox---she was only hours old, still had her umbilical cord. We adopted her, bottle fed her and before long she was part of the family. My dog thought he was her mother! She was a gorgeous gray and brown Tabby, shy and very sweet. Never really acted like a cat because she had never been around any cats. I loved her, and I will miss her.