What -with some honourable exceptions- a miserable thread!
I’m far from perfect but I’d happily do a load of washing for the D’s, in fact I often suggest they bring one especially the younger two with little ones. I’ve got the machine space, the drying space and it’s no sweat to turn a washing machine on!
She clearly forgot to say anything , at least I’d rather think that than that you have a grudging relationship. If the clothes stay at your house for when she’s visiting why wouldn’t you wash them?
As for chucking them or leaving them to fester, as some people have suggested, well you may have scored a point but if that is the yardstick, no wonder so many GNs have estrangement issues.
Remember Christ’s exhortation to “Give and not count the cost” ? That’s what being a mum is all about IMHO.