I know this sounds difficult, but you can't walk on eggshells or wait and "expect" it to happen. Yes, it CAN happen again. That's reality. You have to know that being with you is the best thing possible (and you have to be the kind of guy that she'd be an idiot to lose!), and if she's dumb enough to let go then that's HER LOSS. Not yours.... I think calmly telling her that you'd like openness about this. And if she ever needs to contact OM for any reason you'd like to know so that there are no secrets... and also explain you won't be angry or upset (and don't go there!!!!).
There is no arriving, ever. It is all a continual becoming.