The thick plottens.
So, I guess Misaki has a pity complex. She sees she lived a pitiful past, and has pity for those who helplessly simmer in their own misery. While she was plucked from her misfortune, I guess she wishes to pluck others from their own misfortune, especially those harder to pluck than hers... At least, that's what I'm getting at, perhaps I'm reading too deeply.
Ty4t!