I would definitely recognize the effort she put forth in helping to clean up the home. She needs to hear you say that you appreciated her helping you. Yes, I know, it's her house too, but she needs to hear positive things from you and also know that you are recognizing her for her efforts.
As for her mom, she needs to back off. It's nice that her mom is showing interest in the therapy sessions and wanting to pay for more of them, but she has to back off and allow your wife to make the decision as to whether or not she wants to attend more frequently.
I would say something like "wife, I know you've got a lot to work through, but I want you to know that I am here for you and will listen if you ever want to talk". This lets her know that you are aware that she's got some internal struggles, but also that you are willing to listen.
Keep the expectations at zero and allow your wife to come to you. No pressure!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.