MJ wasn't fleshed out in the Lee-Romita run. So it's hard to call something inconsistent or OOC, when we barely knew the character apart from surface details. We hadn't seen MJ in a situation like this before so there was no precedent for how she would react. It just sounds like her doing anything kind didn't match your negative judgment of her character.
There's "eye of the beholder", and then there's an interpretation that's absolutely not supported by what's on the page. The last panel blatantly has Peter sitting in the room with her.