Sarah Luzinski is the mother of the missing baby in the Season 6 episode Lockdown. She is married to Donald Luzinski. She was portrayed by actress Riki Lindhome.
Sarah is exhausted from giving birth and sleeps while her husband leaves to run a short errand. However, when he returns, the baby is missing and Sarah has no idea what happened to it.
Sarah starts to panic and wants to help look for the baby. However, she risks bleeding if she gets out of bed and Cuddy has to convince her to let them do the work while she rests.