I've had a few friends who needed transplants, and it can be very intense for the donor. (Last year, a friend needed a liver, and another friend gave him half of hers...she was out of work for 6 weeks! He is doing very well.) Also, with kidneys, if you have a donor, they don't necessarily have to be a match...you can become part of a "daisy chain," in which several donors are matched with several recipients, based on matches. (My friend who needed the kidney got hers that way.)
That said...it really was a beautiful episode. And Bonnie knowing how to talk to Tammy about her anger because she'd had to get through her own about her mother was real growth on her part. Kristi still struggles with her own honesty...not going ahead with the organ donor form. (I have always indicated I'm a donor on my license.) NY, where I live, has the worst percentage of organ donors in the US. (Maybe because so many people in NYC don't have drivers' licenses.) Another friend of mine lost her son to a serious head injury, and he helped 5 people with his organs...but members of her family told her she was going to hell for doing that to him.
So yeah, this episode brings up a lot of deep feeling in me...which I count as an honest response to a really good episode.