Is this Karma or Synchronicity or Coincidence

My girlfriend and I just ended a long and awful relationship.
nuff said

Girl leaves valuables in her car overnight. She wakes up this morning and starts a fight with me. When she goes out to her car her window is smashed. She asked me if I did it. I didn't and I said I didn't. I was actually really surprised and asked if I could help, but I guess I really couldn't no matter what.

I told her I was sorry it happened and she left.

Is this karma synchronicity or just coincidence.