Quote Originally Posted by net surfer
It was fine for her, huh? What about him? Or she doesn't care?
In the first place, he's not that older than her and he's not that young so it's adult-kid relation and it's supposed to call him ты and her вы. In the second place, since she started calling him ты, she should have been ready to be called ты as well. If not, she's just an "uppity snob".
You know the rule - treat people the way you want to be treated by them.
Your indignation just proves the point that it is a touchy subject.
As I see it, her addressing him на "ты" shows that she felt that their relationship would be warmer and friendlier than simply working one. Him addressing her на "вы" just allows for some distance.