It took me a LONG time to "get strong"! You will get there, it's a process with lots of setbacks. We are here for you!
A game I used to play with myself (and still sometimes do) is I would allow myself to wallow for 30 min. each day. I would cry and just let it all out. After the 30 min. passed I forced myself to carry on.
Honestly, who knows why your W was not upfront about the gym membership? The WAS is terribly self indulgent and rarely upfront. I could be way wrong but in your case I think your W likes to know that no matter what you will still reach out to her and she proved that nicely by bringing up the gym membership when she had already secured her own.
The bottom line is you both now have your memberships and it's time to carry on and put that issue to bed.
I am sure your W is trying to keep the lines of communication open. You both have lots at stake (proceeds from house sale). IMO once the house is sold then it will be telling on how much she reaches out to you. It is very easy to keep the communication open when thee is $$ at stake. So, see how things go.