Jmad, Don't worry too much about her current level of commitment. Work on doing the right things that will eventually increase her commitment to you.
It's OK to have doubts, and feelings of mistrust, however don't let feelings poison your mental health, and the R. Work on being a person you can be proud of, no matter how she acts, or struggles with her issues.
Treat her as a friend who is struggling at this time. She needs your help. Lower your expectations of the M so that they are realistic at this time.
What's more important to assess is your level of commitment to the M. It sounds like you're not ready to "throw in the towel", therefore do what works to keep you happy and healthy, and to promote positives in the R.
Concerned_Listener
CL 53 W 54 M 20 yrs. 03'-09' Separation + Old Patterns + GAL 10-14' Piecing
"The Master allows things to happen. She shapes events as they come."