On a serious note --
Oh Dan, we were all (including the younger of Dave's daughters) walking on eggs while the older one was living with us. Hell on wheels is an understatement, but we got through it until Dave literally pushed her out the door a couple of months shy of her 18th birthday after finding yet another attempt to flush a used tampon plus the wrapper for the new one down the toilet. It was the tampon that broke the camel's back. He told her useless mother to come and get her. We were so done. We subsequently moved to a house with one less bedroom.
I blame this dropout daughter, long since out of the house, a convicted felon due to her stubbornness, stupidity and poor judgement, with three socially inept kids that she would only rarely allow Dave to see, for the massive stroke he had in November of 2009. She and her kids have only spoken to him once since then, and that was at Dave's dad's funeral a couple of years ago. Several years ago, all communication ceased with her and the rest of the extended family.
In sharp contrast, the younger daughter redeemed herself after tormenting our DG806 with metal bra supports that would get stuck in front of the drum opening and cause a scraping noise. They were a bitch to extract. She has two well behaved kids, a great husband, is a no-nonsense mom and put herself through school for a child development degree and operates her own family day care. She no longer communicates with her older sister or any of her kids. At this point, I'm this daughter's kids' only grandpa since Dave's assisted living facility is on lockdown and his capability for interaction had steadily become more and more limited even before COVID.
So you were kind of right. Far more than a few of Dave's retirement years were stolen from him by that one daughter, even though it happened long after he kicked her out.