sister

I don’t think there’s any directive that you have to have a noun in your title that refers to a woman, whether it’s wife, girl, sister.

Ms. Smith’s lyrics were written in 1971 and came after an argument with her sister, Linda, who disappeared for a day.

The brother of the 65-year-old woman said local officials told him his sister had died.

She described in her essay the transplant doctors drained from her sister's arms and chemotherapy that made her once "great hair" fall out.

One sister earns a decent living fixing cars while the other struggles as a writer.