Had the first two been Macgonnagle and the Defense Professor, then the rest make a bit more sense in that the Defense Professor urged Macgonnagle to do whatever it took to get Harry off his current path, and, well, Harry had just lectured her about how responsibility works, and so she was in a state of mind that demanded action.
That said, you're totally right: continuing to throw potential emotional bonds at him to try and cheer him up wasn't the best idea, at least not so soon. Surely Macgonnagle is smart enough to know that Harry knew exactly what was going on, and would therefore be less receptive? It's a general trend when working with stubborn and upset people, and I imagine this is no less true among Hogwarts students, and thinking about it for five seconds should have made it clear that it'd only be worse with Harry. I suppose she couldn't think of anything better to try.
It wasn't just McGonagall, though - Dumbledore was the one who fetched Harry's parents, even though he had listened to Harry's and McGonagall's conversation and thus knew exactly what the situation was. Not to mention all the other teachers who she had clearly briefed on the situation before they went in.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapters 91 & 92 . The previous thread has passed 500 comments.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,18,19,20.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: