In fairness if I went form this:
mother-in-laws who had popped down to see the house. apparently both MiL and husband had received a rollicking already from the wife who was out
Via this:
they had a sweaty hour or so waiting to hear back whether they would be chucked out
I’d probably flounce too. One person (the husband, we’ll asume the MIL is guilty of ignorance rather than malicioulsy trying to fill Gav’s house with dog hair) decided rightly or wrongly that when MIL turned up with Fido that no harm would be done for just a couple of hours.
Maybe a different response might have avoided:
the state of the house, lack of entry in the guest book (first ones not to make an entry) and broken glasses with no apology, i’d say we had a flounce that even epic STW flounces would struggle to match
And they may have come back next year with strict instructions to MIL not to bring Fido allong for a day out.