teaching girls is the hardest thing ever, they get discouraged at the smallest of things let alone concussions lol...
this is what my buddy did: he was a dickhead to his gf, she didnt learn shit and she was crying the whole time. hes rather impatient and just wanted to hit the slopes. he leaves and shes with her friend and by the end of the day, without anyone yelling at her, she was enjoying herself and hitting real runs. i know many guys can possibly be like this so maybe you are pressuring her too much, or she just needs help. professional lesson would be the best bet.
Lib Tech Skate banana
Burton [ak] 2l Cyclic Jacket
Holden Northfield 3L pants