Must be nice to have total control of your daughter's beliefs. Mine, as a teenager, swore she wouldn't get pregnant until she was at least 30, since we had our youngest when our older daughter was 12 and she saw how much work was involved. She said, "When you have a baby, YOUR life ends and all you do is care for the baby..."
And a couple of months before her 20th birthday, she got pregnant. Four years later, she would cheerfully tell any teenager to WAIT - but she is also a caring mother to her now 3 year old daughter.
FWIW - our daughter joined us in attending a Baptist church. I believe the Palins are Assembly of God people. If going to church would "inculcated in her the need for boundaries", church would be incredibly popular with fathers of teen age daughters!
W’s daughters kept out of trouble. I see W and Laura as strong moral guides. Palins seem to be more free spirits
in some ways, for better and worse.