Annoyed.
MIL stayed over. Fine. Dh just got off the phone with her and she was apparently complaining like mad that we don't have a "hot water on demand service." She means a combi boiler. How the fuck it affected her I don't know, she can't use the bath due to mobility issues, we have three showers which all run nice and hot! She used one! The hot water comes on for an hour in the morning and again in the early evening, providing enough for baths and washing up if required. Not that she washed up. And we have a dishwasher anyway. Apparently she said that we seriously need to upgrade our system that's in perfect working order and she doesn't know how I can handle such a lack of hot water. Not him. Me. But the water is hot for most of the day! Seriously, there's only about two hours in the middle where it's not steaming hot.
We kept our old boiler and hot water tank after the plumber advised us against a combi boiler. I seriously don't understand what there was to complain about! Did she want to just run hot water down the sink? Or was she expecting a nice hot sink wash at 4am? Aibu to think she's a crotchety old mare?