You absolutely have to leave her alone. Every time you do not, you dig your hole a little deeper. People have said here to pretend she is the nosey neighbor and treat her accordingly. Be polite, but do not seek her out, and do not let her linger, or conversations linger. Changing the way you interact with her can be hard, but it is a must if you want to see any positive results.
Me: 42 W: 32 Married 7 years together 8.5 S1: 7 S2:7 Bomb #1: 09-16-13 Recon #1: 11/13 A discovered 04-03-2014 W filed D 05-19-14 but never served me I filed D 12-02-2014 S 05-31-14 Divorced 5-19-16