A Lady in Black by Florence Warden

Mabin's sprained ankle was a more serious affair than she had supposed. For a month she never left the house, and for another she went out in a wheel-chair, or hopped about on a pair of crutches.

And during all that time she caught no glimpse of the pretty neighbor who had done her such eminent service at the time of the accident. In vain she had hung about the road outside "The Towers" looking up at the west side of the house, which was built into the wall alongside the road, trying to distinguish the fair, blue-eyed face at one of the windows which peeped sombrely out of the ivy.