Of course it was too much for him to take. That was perfectly understandable. Hermione watched in dismay, shaking her head. She'd learned a lot now. But she still wasn't entirely sure how to help.
Unable to handle the meeting of his father, someone he had longed for before this day, Harry rushed from the home and down the quiet streets of the town. The scene of course changed again, now to one that Hermione would recognize, one that showed the final straw for Harry on his road to a break down. She now stood on the grounds of the Inn and could see a snow white owl heading straight for Harry who stood still with shock.
Hedwig. Hedwig's return had been the thing to push him over the edge. Unfortunately, that made all too much sense, but Hermione hated having to stand there and watch. She should have been there. She could have prevented this. It was only a few days ago!
There was no way that Hermione could have prevented this as it had been coming for months, since Sirius' arrival. Harry's mind simply needed to shut down, to allow itself to deal with the changes that were happening and the effects it was having on Harry's reality. The problem here was that now Hermione was going to have to realize that what Harry really needed was time, and something truly epic to pull him out of the coma his body had forced upon him.
This wasn't right. It wasn't fair. Hermione didn't know what to do. She couldn't think of anything she could do. Time? Would time help? How much, though? How long could he cope like this? How long could they cope with him like this, even?
It is about what Harry needed and right now he needs time. Hermione would have time to fume over this as she was moments later all but kicked out of Harry's memories and back in reality.
Hermione gasped in surprise when that happened, clutching her head. It had happened so suddenly. She hadn't expected it, or been prepared for it. "What happened?" she stammered.