Everything everyone has said -- the way Ginny comes in for a huge dose of viewer-sympathy, and the way Harry's actions are so blatantly both desperate and unhealthy, and clearly unsatisfying as well; the plain-faced narration (Ginny isn't one to mince words); and the ART!
Snape's photo knocked me over. Not just the wonderful "real"ness of it; though that was definitely there -- it was definitely the centre of the page, and the power of the story was centred in that panel, too.
But what really hit me at that section of the panel was the fact that, looking at Ginny, Snape smiled... and Ginny recognised that as a "smile" -- because it's not, y'know, much of one. It really drove home to me how much Ginny is affected -- she must be subliminally reliving every Potions class, every encounter, somewhere in her mind, because Harry's "relationship" with Snape has forced her into one, too. That she can correctly interpret his emotions from his expression, even through her own rage (and possibly tears), says so much about that, to me.
I didn't even notice that he blinks until I was going back through the pages. :D