What is the meaning of "She glanced mechanically at the house oppiste" in the following sentences (Source: Of human bondage by W. Somerset Maugham),
The day broke gray and dull. The clouds hung heavily, and there was a rawness in the air that suggested snow. A woman servant came into a room in which a child was sleeping and drew the curtains. She glanced mechanically at the house oppsite, a stucco house with portico, and went to the child's bed.
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Does it mean "A woman servant came into a room and drew the curtains. She glanced through the window of the room mechanically at the house that is opposite (===> the house opposite is not the house with a room in which a child was sleeping but another different house in which a child was not sleeping) ?
Whose house did a woman servant look at? Did she look at the house with a room in which a child was sleeping? Or did she look at someone else's house, not the house with a room in which a child was sleeping (==> figure A) but someone else's house(==> figure B)?