switch

She looks like her mother, now. Even the mothers were not sure when their
babies returned from the treatment for jaundice. Their hair lengths were
different, or so they thought, but then again, no. Then years later, when in anger, the father slugged his wife with the insult that the girl looked like no one, that his wife must have slept around, the tests proved she was not theirs.
But by then, she was. Too late at ten to switch the girls, too late to wrong the right. The girl with the long hair shrugged exactly like her other mother.