I had this recently. My parents wanted me to make a full hour round trip drive across town to pick them up in the middle of the night so they could save $50 on a taxi. I said, “No,” as I have kids to look after now, and my mom launched into how I’m not family first anymore and after all the things she did for me as a kid, she can’t depend on me to pick her up.
I stuck to my guns though. They conned my brother with the same story, but I set a boundary.
Forget her feelings. Make it clear there is no relationship. Otherwise they will hold onto hope and could try to undermine your marriage.
You can’t prioritze other people’s feelings. Almost always others wont prioritze yours.