I wonder if there are flies to be caught with honey, and whether I could bear attempting that with Umbridge. Perhaps I ought to make a pre-emptive address to her and see where that takes me, but it's tempting to allow her to continue ignoring me.

With Dolohov I believe there's a more pressing reason to make nice: Aurora seems quite taken with him, and I do not intend for some upstart Death Eater to worm his way in and divide her from her better angels. I know she may be a lost cause in the end, but if it would be a sorry shame: she's got a good heart and plenty of solid, good sense.