I tried the T for me. It helped. She hated it becasue it changed me. She thought for the worst I thought for the better. I was more idependent. I can't afford to do both. Finacially just going to one is more than I can afford finacially.
So pick one. I'm going to be blunt and say you will get better results from individual T for yourself.
Her reaction to your improvement based on your own T is the "normal story" around here.
Couples T working poorly is also the "normal story" around here--Either the T will be ineffective, and/or side with your wife... . or your wife won't follow the T's recommendation that she change her behavior.
Actually, the absolute BEST results would be your wife choosing to get individual T for herself (preferably something like a full DBT program), but getting her into it isn't going to be easy!