This was my primary reaction to that episode in a nutshell. I wept for the boys, sure, but I totally sobbed for Mary. I can't imagine my babies being taken from me and suddenly being told that these grown-ass men are them. No they're not! What the hell kinda sick joke is this?! Mary felt personally compelled to find out what had happened to those ghost children. Of course she did! And she didn't really want those two big guys coming along in the first place -- Dean just invited himself and Sam along on that hunt like he expected she would be fine with it. What a pain in the ass he is!

At least Sam seems to be trying to understand her and expressing some sympathy for her situation.