And, I would resist the LBS's temptation to demonize the WAS and make the problems all about the A. The A is the least of your problems, it will go away as your other problems improve.
I disagree. In fact, I think you have it exactly BACKWARDS.
Her problems will only improve AFTER her husband has ended his affair. This is a physiological fact, as his brain is all awash with the "love chemicals" and addiction that is the OW.
No, your husband's affair is not all of your problems, R2GU. But it IS your immediate obstacle, and you're not going to make any real progress until it is removed, in my opinion. An addict needs to first be separated from the source of their addiction.