I just went up and read about the nasty comment that co-worker said. I hope they treat this seriously. Guys who make comments like that have to be smacked in the head with the entire book before they begin to see that it is wrong. And you KNOW he has said things like that to others in the past. "Cause it is never said to someone who has the cajones to file ANY kind of complaint until they have done it so often they think they are untouchable.
But it WAS smart to report him anonymously, and with your daughter writing the complaint. YOU don't need a harder time, that is for sure. Esp since, as you know, you are the hardest worker they have!
Enjoy your new position - before long you will have your own store to manage!