Stop trying to be Mr. Fix-It. YOU cant be in charge of fixing HER problems. She has to have the internal drive to want to be a better person to take on that therapy activity. Otherwise, you are just pushing her farther away.
"I went to your stupid therapy and it didnt help. See? I tried everything! Divorce is the only option."
I would strongly advise against trying to get her to go to counseling with you at this time. Focus on YOU.
