She knows. That's why she is having such difficulties. If she gets a D she thinks her pain will go away. If she stays, it may remain and the work will be difficult. Reassure her, when the time is right, that if she decides to stay in the M, that the two of you will work together and she doesn't have to walk this alone. It's easier to walk the hard road when you walk it with the one you love, rather than a stranger. The OM is just that, a stranger, someone who makes her feel good, but for only a short time. He will never be able to provide what you provide for her. She knows this! The problem is for now, she only sees the short road. Remind her that anything worth having requires dedication and the willingness to roll up the sleeves and work for it. She sounds like she's moving this way, so try to hang in there. It sounds like to me she is starting to see the big picture. Give her space but in the meantime, go on with your life. Let her see joy in your life - she's going to want some that joy and peace. She has neither right now.