After doing a bit of research, I found documentation from Planned Parenthood that states it is NOT 100% effective. It states directly on their national website that depending upon the procedure she endured (medical or surgical) the effectiveness varies from 92% effective to more than 99% effective.
More than 99% effective does not equal 100% effective.
Also, it was not stated in the article the type of procedure she went through. If it was the abortion pill that 8% of variation could mean high possibility for a child.
Planned Parenthood Abortions
So I guess IMHO if she's going to sue anyone, she should sue the doctor who did not detect the pregnancy, not Planned Parenthood. Especially when they say upfront that certain procedures are far less than 100% effective.
While it's naive to say that a 45-year-old should be abstinent, the truth still remains that abstinent people ironically are
NEVER pregnant.

The last I heard of an abstinent woman being pregnant was a few thousand years back...this really nice lady named Mary.
*snickers at Raper as last name* Sorry.