There are worse things than your W trying to be a good mom. Maybe she is realizing what is important to her? Maybe one of these days she'll realize that you are important as well? Who knows?
I wouldn't worry about some supposed unknown agenda...just take what she is doing and act as if it's great. All else equal, I'd rather have a WAW who is a good mom than otherwise.
Me: 43 W: 41 Together 2009, Married 2011 Sons 10 and 6, Daughter 5 Bomb 2/21/21. W moved out 10/2021