Well that's awesome. If she is serious then it sounds like it is time to get a new phone with a new number! That will stop all " blocked " numbers, and give a fresh start. She can also let him know if it persists she'll get in touch with his wife. Of course this will be done in front of you...
Just a thought, not a sermon!
Formerly Workinprogress H :55 M :over 29 yrs. Together : 33 D : college D : adult BD and left : May 2013 Separated Experimenting/Replay