I agree, it probably isn't best to go straight back in with the OM thing. She has laid herself pretty bare in that email to you.
Might it be best to suggest meeting up for coffee or having a phone chat and hear more about where she is at with things? Of course the killer question for you is always going to be 'what's happening with OM?' And you would need to ask that at some point of course.
You could always send her a holding email along the lines of - W, thanks for your email. I appreciate your honesty and truly I need to think about all you have said before I come back to you. I'll reply as soon as I can. Take care, HP
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus