I read once, from one of the online "gurus" on how to get back with an ex, that if an ex wife is interested in reconsiliation, you shouldn't expect her to do the work. Women don't do that. They will just drop a hint and wait to see if the XH mans up and initiate.
If you truly believe that it was you that was the main problem in the marriage, and there was no infidelity or bad behavior on her behalf that requires remorse, humility etc (I haven't read your sitch) then maybe you need to keep the contact going.
It seems that your XW dropped a hint doesn't it? Right after you became single. Anyway, your life, your choice, your outcome. So take the advice or don't.
M:46 WXW:40 T:20 M:13 D3,D8,D10 BD:11/12/16 D:12/14/16 OM confirmed 01/20/17