My enemy's cradle / Sara Young.

Cyrla lives with her Dutch relatives in Nazi-occupied Holland. She has been successfully hiding the fact that she is half-Jewish--until neighbors threaten to expose her identity. Through an cruel twist of fate, Cyrla enters a Lebensborn as her pregnant cousin, Anneke. Cyrla wants to keep her child, though, so she resolves to leave the maternity home before the baby is born. But an unexpected visit from the German soldier who fathered Anneke's baby complicates her plan to escape.