THat's really lovely.
Like you, I have stopped expecting anything, even acknowledgement, on Mothers Day. Except from easy child. And this year, easy child is on her honeymoon in Thailand, so I didn't expect anything. But ALL my difficult child-ish kids remembered, apparently independently, to wish me Happy Mothers Day. The only one missing was, of course, easy child.
But then we got an email from easy child & sister in law, including photos. Lovely!
Marg