I think asking her anything about R at this point is just going to push her away. If and only if she decides to step up to the R table can you start probing into the idea of there ever being a OM at some point.
As hard as it is (believe me, I'm the same spot!), you just have to let her go and figure her sh*t out. Anything else you do is just going to backfire as it did for me. One day of asking him to stay and we went from "I think I want the same future you do and I want to be there for your graduation" to "I don't love you, I never have, I never wanted any of this."
M:26 H:32 T:8yrs ILYBNILWY/ "I'm not happy": 2/6/16 D-Day-discovered PA/EA: 2/10/16 Separated: 2/14/16 He's living with OW I moved to different state: 06/16 Currently: Trying to move forward