Whatever I did to make it so that my MIL would come and bring her yappy nasty little drop-kick dog, I'M SORRY! It'll never happen again!!!!
She is upstairs napping on couch while 4yo nephew languishes in boredom. Am unable to contain anger at this state of affairs so stopped downstairs for brief respite in front of machine. Unavoidable really, as alternative is to snap and behave poorly.