Honestly curious, what is the reasoning behind parental notification being silly? Teens who become pregnant have probably not been pregnant before, it makes sense they should seek many avenues of advice before making a decision on abortion.
Advice usually comes through someone's own lens, let's put it this way. A 16-year-old girl gets pregnant, she decides she does not want to have the baby. She goes to a women's health clinic, but before she can have an abortion her parents are contacted. I would assume that in some cases the parents could be religious, anti-abortion, etc. But for whatever reason they say she cannot go through with it and will disown her if she does. What is she supposed to do? Keep the child, a child she is woefully unprepared to take care of, and live her days trying to make ends meet. Or does she have the abortion and be kicked out of her house.
More advice is ALWAYS a good idea, but it should be the child's choice what she does with her body. Even if she doesn't take advice from her parents there are other people that can advise her (health providers, trusted friends, etc.) The point is that by forcibly bringing in parents to (what should be) a girl's autonomous medical decision, you open up many paths for harm to families and especially the young girl.