We watched last night and the ending was sad, but not surprised.
The problem I had with Sean was how he talked to and treated Dr. Now. Yes, Dr. Now told him/warned him while he was laying in the hospital bed after gaining weight back both times. Sean's reaction and words were nasty and the rolling of his eyes. This man was getting everything for free, including the hospital, counseling, the therapy, etc., and came off very thankless to me.
The 10K possibly came from his mother (maybe in her will) or maybe his dad gave it to him as I recall he said his dad gave him some money. He just came across as very ungrateful.
I actually felt more bad for Dr. Now at the end of the show when he talked about him and how he never gave up. That man has more patience than I ever could.
Hopefully, Sean is now with his mother in Heaven and not lonely anymore.