Suki, that is a brilliant idea! Just ran it by my husband, & he thanks you too.
I had a bit of a textathon with mum a couple of weeks ago after she sent me a text blaming my husband and I for SD's decision, and she swore she will resolve things between her and her daughter. I replied saying that I hoped she could eventually resolve things, but that resolving things rested on her shoulders, not her daughter's, and advised that she should let SD be and allow her the space and time she wants. I told her I was sure SD would contact her if she wanted to. So, your suggestion is my husband reiterating to her what she's already been told. Brilliant!