Uh, yeah...welcome.
You are, your GF ain't. She has NO F'N business blaming you for something you really didn't do. And if she can lay that kind of guilt on you, THEN go out clubbing with friends...that isn't someone you need in your life. Only those with a conscience feel guilt, and since she pretty quickly transferred hers to you, she'll squeeze your emotions like a sponge and walk away laughing someday.
The SQUIRREL was a greater loss to your life than she would be.