Bristol is right and would have been better off to follow her own advice.
Yes, she would have been better off to practice abstinence, but she didn’t, and now she can use her experience to push home the fact why abstinence is the only birth control that will work 100% of the time.
As for what the AP article says, I don’t get how telling others about abstinence while realizing it may not be all that realistic is contradicting what she said on fox. At least she’s trying to get her message out, and if some of the kids get it, then something is better than nothing.