“A couple from Kingston adopted the twin girls from Vietnam when they were 18 months old. Both have Alagille syndrome, a disorder that affects internal organs. The girls’ father, Michael, was a genetic match — but he could only donate part of his liver to one of his then-three-year-old daughters. Doctors decided which of the twins would receive the liver transplant from their father after the family said it could not make the heart-wrenching decision.” https://www.cbc.ca/news/canada/toronto/anonymous-donor-kingston-1.3728111
In this case one element of “direct experience” in the situation (ie the father) was a bit problematic and someone with more distance (a doctor) was given a decision-making role.