U-hu.
Draco's thinking... more than interesting, to my mind. You could have counted on Dumbledore to make sure he knows what's wrong with his staff, but it was still a wonderful scene. Poor Draco, with arguments, fear, the potions... I reckon he became a bit like Snape then. Horrible thought! However, I could understand why he didn't want to come to the meals all the times he didn't. Somehow, he's very cool. *nods*
And then there was Ginny again... once more, very odd situation, but yet entertaining. ;) Well, they can't be kept without the other for too long, moreover I was glad that they apologized (a bit).

The fact that Ginny felt like in her first year and had her kind of sleepwalking worried me, though. And yeah, the real surprise twist was actuated right then. Aw, so startling (but fitting) the deatheaters came at that moment! I should have known. But when Lord baldie tried to use her to open the gates (which is, as I see it, a great, dark idea that could have happened!), I almost guessed what would happen, especially at these words: "I'll give you Harry."
Not so true anymore, are they? But I was fully intrigued by the story line and I just thought: "Fight it, Ginny!" - and I'm happy she did and warned everyone.
Ah, battles... always so exciting and gripping! I felt sympathetic to Draco then, having to face his father now... very untimely, although I actually think it was perfect, an attack, just at this point of time. Somehow surprising, somehow right, good mixture.

Professor Vector is a woman, by the way, but apart from that (you couldn't have known that when you wrote the fic either!), the teacher's planning to fight was really convincing. Isaac's also a nice, suitable name for an Arithmancy professor, isn't it? ;P
And my other (only) critisism would be Kingsley... I've never seen him as a "glaring" person, if you know what I mean. But maybe, it's just Draco... he does seem to be mistrusted very often, at least after the trio came back there. It might be necessary for the story's ambiance.

So, then, another relapse for Ginny (quite angsty, that bit, though it had to be, from Draco's point of view), and FINALLY an explanation. It was wonderful to have Dumbledore there, to protect her a bit, and little Malfoy did a great job, too. A bit dramatic. However, since the idea with an on-going possession and Voldemort trying to make her do things is so new and therefore suspenseful, I think that was good, too.
Ron's reaction before, hahahaha. And in my opinion, McGonagall does know a lot that's going on in the castle, and it didn't surprise me that she seemed to know. It was still fun to read. :D

So was the scene in the end, where he guided her in safety to the Head Table. I just think it must have been an awesome sight! The whole... way of fighting, or rather organizing and defending the castle without direct duels, took a bit getting used to but it was cool.
The last sentence here was funny... she collapses but she's seen it and everyone cheers. One of the most fantastic parts in the story, I might say.
So, I enjoyed this one, as well, it was a highly interesting and action-packed chap.

The groundwork for the sleepwalking wasn't set up as soundly as I would have liked, but so what. It's like pointing out a spot of dust on an otherwise pristine work of art.

Glee! :)