I will add to the chorus of not responding to the post about the neighbor. I like the response about your son's grades.
One thing about cheaters....they will not admit to cheating until the evidence proving it is insurmountable. I know people that were pretty much caught (they were seen going into a hotel room with another person) that to this day have denied cheating. Most cheaters will lie, avoid, deflect, explain and come up with crazy stories to deny they have actually cheated. Short of pictures or video of them in the very act they will attempt to deny.
I say all that to say, in case you were even slightly tempted to hear her side of the story, that you will never get the truth from her. And even if you do you cannot trust that it is the whole truth. This is her guilt coming back on her. Innocent people rarely feel the need to prove their innocence. People that are trying to hide things are the ones that insist on their innocence.
The bottom line is that now none of this matters. You are moving forward with your life without her. Her past transgressions are no longer your problem.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018