You obviously didn't read the whole story:
The boy's parents say they can provide a better upbringing for the baby than Crane can. Her household includes her stepfather, David L. Jacobs, who was convicted of domestic violence last year for hitting, choking and pointing a gun at Crane's 17-year-old sister and was placed on two years' probation, court records show.
As far as teaching chastity, kids will make mistakes, won't listen to parents, think they know it all. Been there, done that. You really think a majority of kids are virgins at 18? You must not get out much.