A beautiful thoughtful post @Sister, thank you.
To be fair, the kids have mostly done the extra things they've been asked to without too much arguing. My 15yo daughter has been the star, she's done the most, and with the least fuss. The 18yo son stepped up in the crisis moments, when I was fully incapacitated. Otherwise it's been repeated arguing and delaying on the task... I don't think I've asked my niece (10) and nephew (12) to do anything extra. I've been trying to shield them.
However this afternoon I am going to draw up a chores roster to go on the fridge. My husband and I have been talking about this and it's time to put it into action. My new normal has to include more time for me, and I need to teach the kids to become responsible contibuting young adults. Let's face it, it'll be a long time before any of them move out and I'm sure as heck not running round cleaning up after young adults unless they're doing the same for me!