As Rosemary said, pre-eclampsia can hit very fast and very hard. Prenatal care can catch it when it comes on slowly, but the lack of prenatal care until recently had nothing to do with your daughter getting sick. Since she was seen last week and everything seemed fine, I would assume that she was one of the fast-moving cases. I'm so sorry.
Please do lean on us for support, and invite your daughter here too.
Please also help your daughter watch her signs and symptoms http://www.preeclampsia.org/health-info ... d-symptoms
she is at risk of post-partum complications for up to 6 weeks post-partum. Especially watch her blood pressure - ask the doctors what numbers (150/100? higher? lower?) to call in for -, also headaches that don't go away with tylenol, visual disturbances, pain under the right ribs, and trouble catching her breath.
Gentle thoughts and prayers for you and your family.