I have talked to the girls about a C and my D15 is adamant she's fine and doesn't need/want anyone to talk to. D13 might go there, but is likey to follow older sisters lead.

Part of the problem (ok, probably the whole problem for them) is that this is still not out in the open. I think it will happen fairly soon though (plan to speak to DB coach re this today). Once he's moved in (this Saturday) and esp if he has or when he gets a f*** buddy, I'm sure the weekends at home will slow down and/or stop. I also wonder if he needs to be out of the house before we talk to the girls clearly about what's happening b/c he doesn't want to have to look at them (translation: I'll talk with them as long as I can run away.....) and see their pain. Coward.

I don't know and it doesn't matter. At least he talking to them more for the moment. I keep talking to them and I keep it light and easy about most things. The grades are frustrating and when I make suggestions and ask them to help find solutions, I'm generally met with a stonewall. Oh well, patience in all things.