Skaea was the daughter of Danaus and Europe. She along with her forty-nine sisters and half-sisters wed the sons of Aigyptos. On her wedding night she just as all her sisters had (with the exception of Hypermnestra) slew her husband Daiphron with a dagger provided by her father.
When Erato and the other Danaids who had murdered their husbands they were sent to Tartarus and were forced to carry water from the river Styx in a bowls (or jars according to some) with holes over to a tub which leaks at multiple parts. Erato and the others were told only when they filled the tub could they wash away their sins. The Danaids continue this essentially impossible task to this very day.
King Danaus & Europe
Spouse & Lovers
"...of the rest Busiris, Enceladus, Lycus, and Daiphron obtained by lot the daughters that had been borne to Danaus by Europe, to wit, Automate, Amymone, Agave, and Scaea."