I don't want to go on Sunday because I have been dodging the shepherding visits and phone calls etc since then - could set me back. When I visit family I do go to their meeting with them. But my mum, at least, knows my views as I have had conversations with her. She might have kept quiet about it though.
I understand. Another option for the day as suggested above is a great idea. If she piously insists on attending a drone session, then you can always say "have a nice time, we'll do something fun when you get back."