I just watched for the first time this week and I loved it, The family was one where the mom had donated - I think it was bone marrow. At the ned - she was able to meet the other mom and little girl who was still alive and healthy from being the recipient.
Yes, the builders seemed to love what they were doing and truly wanted to make things better for the family who would live in waht they created!! Yes, I cried

I saw the preview for the episode you mentioned CamCamPup - but I never keep track of when things are on!! I would have liked to see that one, too.