snicker I can well imagine lots of potential for confrontation (I was looking at the simplest approach - I daresay it won't be near that simple), esp. with Ron (most likely) and then Ginny. I really wouldn't rule out a confrontation with Tonks, either. Of course, confrontations with Dumbles and Snape are, practically, a given (I do hope Snape has a rotten time of it).
There will be several confrontations, Dumbles and the new trio, Snape and the new trio, Ron and Hermione, Harry and Ginny, Molly and the Trio.
If I can work it out, Molly and Anne Granger...
You can count on Snape not enjoying life.