Mariska Lutz

From Bioshock - Wiki on Neoseeker

Married to Sam Lutz, Mariska and her husband moved to Rapture for work. They had a daughter together while they resided in Rapture, and named her Masha - who knew nothing of life above the Ocean's surface. Masha was taken from them by Andrew Ryan's men, telling them she could help save the failing city sometime after New Years 1959.

Mariska's worst fears were confirmed when she saw that Masha had become a Little Sister. In their despair, they committed suicide by overdosing on pills in their room in Neptune's Bounty.