Pilar is using non-medical techniques for pain management during labor; she has someone insert fine needles into specific locations of her body. she is most likely using:

This would be a form of acupuncture. By placing the needles into specific areas, she is trying to find a way to mitigate the pain brought about by the labor. Acupuncture as a science is somewhat controversial, and treatments have been shown to have mixed results in alleviating chronic pain.