Her mom obviously knows about your sitch. Maybe her mom is supporting your W's decision. What parent doesn't want to help end the torment of their child.
Maybe your W is simply going through the exercise so that her mom believes your W is taking the steps "to be happy".
As you said, you heard PART of the call. Maybe her mom was explaining how much work a D is...
No way to know the meaning...
It takes a few miles and bunch of time to stop a speeding, loaded freight train...
Keep doing what you are doing. A phone call about D process to her mom does not mean you haven't made progress.
