Saint Ange

This French movie appears to have straight to DVD elsewhere. Set about a decade after World War II, a young woman hiding a pregnancy arrives at a dilapidated old orphanage, as a maid. The place is mostly deserted except for a few staff members. As she moves around the creepy building, she hears and sees things, but the staff aren't talking. Is it her imagination and pregnancy, or is there something frightening lurking in the place? Mostly in English with some French.