I'm writing and I need help with a term. So this girl (A)'s father (B) wasn't married to another woman (C) and she had a child (D).
I know that C is A's half-sister, but there's more. B had a child with another woman who he was not married to (D). And D had E. Would E be considered D's step-brother?

*I'm sorry if this is confusing.

Both of them are B.

d.) then bernice winced as marjorie tossed her own hair over her shoulders and began to twist it slowly into two long blond braids until in her cream-colored negligée she looked like a delicate painting of some saxon princess. fascinated, bernice watched the braids grow. heavy and luxurious they were, moving under the supple fingers like restive snakes—and to bernice remained this relic and the curling iron and a to-morrow full of eyes.

throughout history, economists have always thought  ..