i always say put yourself in her shoes 'literally' imagine your her? be her friend listen to her
most people don't Really listen, be a friend, just have time out or away from her now and then when it becomes too much for you, remember she is in pain and may not see the grass is greener in her current outlook. be a friend stick by her tell her you need time out from her for a few days or wks, be honest with her it helps