My 40-year-old sister has CP and Down's Syndrome, I care for her at home; she is 4 foot 4 and 80 pounds (we didn't give her growth-retarding treatments). I would have a terrible time dealing with her if she were of "normal" stature/weight. These parents obviously want to care for her, I don't have a problem with the treatments they gave their daughter.
God bless you.