My question involves adoption law for the State of: I believe nevada
This question is for a friend/ex

I was wondering in southern nevada if a woman leaves her child who is a newborn at a hospital would her family ever be able to have contact with that child when it's an adult. She was anonomous so they have no connections to her and the baby. But her son wants to late know his sister... She had it premature so it's always probably going to be in the family's mind if she did or did not make it out of infancy etc... Anyway in 18 years could her siblings try to get in contact is it possible to reunite a family lost through a safe haven adoption?