Why do you think it would likely have been a poor decision? Is it only because the mother’s body rejected a non-family donor’s kidney, previously?
I’m thinking that the daughter’s kidney would have been more suited to the mother, and had a more likely chance of success.
Yes, I would guess that the stress on the mom's body, having rejected that kidney, might make a new transplant less likely to be successful. Also, the diabetes could make things more complicated.
I'm no expert, by any means! It was just a passing thought in my head as I read the article.
If I could give one of my parents more time by donating an organ, I'd probably do it, even if the doctors thought it was a bad decision.