Dammit, it's just not fair. Ted and Joan would have made delightful boyfriend's parents/potential in-laws, but they died before Robin could even meet them. Instead, she's gotten stuck with first the Cunliffes and now the Murphys: a persnickety mother and a loud-mouthed lush of a father. Plus, most likely horrible aunts, too. We all remember Auntie Sue from the wedding; if Strike and Robin are going to solve a Yorkshire murder next book, I continue to nominate her for the victim. Although we haven't met Mrs. Murphy's sister, she presumably knew were coming to stay with her and didn't warn RFM, so I don't think much of her, either.
But, I must say, I like the opening sentence of Chapter 99:
Several things happened in quick succession the following morning to thoroughly destabilise Robin.
This could be the epigraph for the entire book.