Don't worry yourself. You don't know why OM broke up with her. He might have OW. He might of gotten tired of her personality. He might of just wanted to be free of your W. Youbdont know. She is looking for slime one to blame and you are the easiest target. Leave her be. Don't involve yourself in her relationship with OM.
Back away and let her go. If you try and stop her what you think she's going to say then? That you got her way of happiness. Get oit of way and let her deal with reality.
You are doing good by leaving her store.
And don't take the blame she is throwing your way. Its hers to deal with.
M:37 W:37 T:11 M:10 S17, S13, S10, S4 BD:06/28/17 OM confirmed 07/20/17 Recon the M 10/29/17 Working hard:2gether
Onward and forward
This process is not a sprint it's a marathon! Patience, Patience, Patience.