Confluences, have you considered giving her a few bread crumbs since no contact doesn't seem to be working?
Maybe send a text or email about something random that could spark a conversation? Or say you have an extra ticket for something like a hockey game and see if she'd be interested. Like "hey, I know you are pretty busy these days but Im doing xyz and I have an extra ticket. Let me know if you are interested." Short sweet and it can sound like you are going either way (so no pressure on her like its a date).
BD: Aug 2012 Separated since May 2013 S born Aug 2013 Aug 2013 H agrees to consider 'baby steps toward working things out' H is/was actively seeing someone?