I can't recall the name of this movie. I remember a few things from it. It was about a couple with a newborn. They lived in an apartment building. A demon started haunting the lady. I remember she would walk her baby and the little girls in the stairwell drew a pic of her baby carriage being hit by a bus. One time she was in the basement of the building and the lights went out and as the demon came out as she ran to the elevator. And at the end a lady from a bookstore, I think, helps her get rid of the evil.