Yes, ignoring it is the best thing to do. I've been trapped in these games every time in the 10 times we've split up. Its not pretty, its petty.
I guess it depends on the situation. As the previous poster wrote, best not to engage in the game but what if she's regularly breaching the boundaries, reaching out while you're still in a vulnerable position?
I draw a line in the sand with the following intention: if she remains blocked then neither of us can play that petty game again.