I've actually been avoiding reading this, because it's just such a weird pairing, and I didn't know what to think about it.
You pulled it off, though. I guess I shouldn't be surprised - you're very good at introducing some humanity and nuance to characters who have done some pretty terrible things.
What really made this for me was that you didn't really try to redeem Dolohov. He thought about wanting to change, but it didn't seem like he was really committed to the idea. His thoughts about Hermione actually speaks to that for me far more than anything else - it almost feels like he traded obsession with blood purity and Voldemort in for obsession with Hermione. I saw the same blind faith, the same pedestal, and even the same selfishness in his thoughts about her as I saw in the way a lot of death eaters approached Voldemort.
The picture creeped me out in particular, actually. The idea of him holding on a picture of her at her wedding and using that to fuel his fixation - cutting out any mention of Ron (right? well, regardless), of course - just feels wrong to me, and I think that it speaks volumes about his feelings and his attitude toward her. He's still not really seeing her as a human being - his entire thought process really is all about him and how he feels. He really was quite creepy, which is really what made this work.
One thing did stick out to me, though: you mentioned that he's already had four parole hearings. That seems odd to me; he's a Death Eater, and he acknowledges when he's thinking about Hermione that he's killed people. I'm surprised that he's had any parole hearings, let alone four.
Otherwise, though, this was wonderfully creepy and made my skin crawl in all the right ways. Amazing job with a really tough pairing. ♥
*review transferred from HPFF*