If this is true, there's nothing here I would personally hold against them. However this could be an issue for the christians who support her.
Well I would due to her preaching all how she made the decision to have a downs baby, acting all sanctimonious
Also, as a mother it is not something I condone. My stepdaughter is about that age, and is she turned up pregnant I would support her to the ends of the earth BUT expect her to take large responsibility and be a loving mother. Not a good lesson to teach a daughter, "dump the baby and lie dear."
In 2008, the only reason to do that is to protect your own rep, no one burns Scarlett letters on unwed moms foreheads anymore in the "land of the free". If this is true, she it to save face. If not true, cruel for the teenager.