Background - been best friends since we were pregnant with our DC now aged 10. DC good friends. I often have her DC at our house at short notice and overnight and for weekends when she wants to go out. Also have her dog regularly overnight. All of this is rarely reciprocated which is a bug bare of DH's. She's been a single parent since marriage split 3 years ago and I have fully supported her as friends do.
It's mine and DH's wedding anniversary on 11th December and he had arranged for BF to have DC aged 10 and our dog Saturday and Sunday so that we could have some time away. Younger DC 6 is going to DM (she couldn't manage both DC and dog).
He arranged this over 3 months ago and booked hotel etc - fast forward to tonight she has had an argument with her boyfriend and is too upset to have DC and dog at the weekend.
MIL died last week after a short illness with cancer and she knows difficult it has been for both DH and I - we were really looking forward to having one night away and I'm gutted - AIBU to feel really angry at her right now ?