<human>: Could you distill the essence of the text into 1-3 sentences?

My 10yo daughter looked troubled after school, but she didn't want to tell me what was wrong because it was a secret. I pressed for details and she finally told me that her friend (10F) told my daughter that their parents fight a lot, sometimes the dad hits the mom, and he yells at the kids. She told my daughter that she doesn't like her father but she is also worried they will get divorced.

The allegations of domestic violence are troubling. The power in their relationship is not equal: he is older, he earns most of the money, and he brought her back here from another country as his bride. He is also a weird dude: if I was being nice I would say he seems Aspergers-ish (sorry for any offense). He can't seem to tell when he is droning on about a subject that is only interesting to him, and he will sometimes blurt out very rude, mean-spirited comments that he considers jokes. She has told me that he said he married her because in her culture the women take care of the domestic chores and he didn't want an American wife. 

I really like the mom: she is very kind and hard working. Their daughters are lovely girls. I would like to help them if I can. But I don't want to betray my daughter's confidence by making it obvious that I know something.
<bot>: Friend's daughter told my daughter that their dad is abusive, how can I broach the subject with my friend without betraying my daughter's confidence?