I guess she may feel she fired 'you' but not her S - and is looking for ways to be more involved with him - but of course he is of an age and is reluctant. Maybe she feels if she can come and cook, he's a captive audience.
Of course I can understand that her coming to cook may well not work for you, given all circumstances. So, you may want to be straight with her.
W, S showed me your text and I need to let you know that cooking family dinner for us really won't work for me given all circumstances. I'm sorry if you're feeling raw about things and do take care.
Maybe wait for others to chime in though - I'm no expert... x
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus