I will give you my opinion. Your wife knows you know she is in an A and at this point you are accepting it. The fact that you are accepting it IMO makes you look weak in her mind.
Especially when from the outside there are zero consequences for her continuing the A.
To continue to receive the benefits from the marriage she will act friendly to you as long as you continue to support her financially. I think when she does this you feel that things are getting better when in reality she is just stringing you along.
Look I know this is not easy but only actions are going to change the dynamics of this relationship.
