This page contains information regarding Star Trek: Lower Decks, and thus may contain spoilers.
On stardate 57752.6, the Rubidoux had been invaded by a space entity that fed on energy, Dayton and her crew shut down power to the Rubidoux so that the entity attacking them wouldn't be able to feed.
Later, the USS Cerritos, under the temporary command of Captain Amina Ramsey, found the Rubidoux adrift in space, and an away team from the Cerritos beamed to the Rubidoux in environmental suits, where they found Dayton and her crew hiding in the cargo bay. During the rescue, Dayton lost control of herself and began panicking, so Beckett Mariner had to knock her out in order to evacuate her and her crew to the Cerritos before the entity consumed the whole ship. (LD: "Much Ado About Boimler")
After a while, Dayton was given command of the USS Solvang, a new California-class starship. The Solvang was attacked by Pakleds, and the entire crew, Dayton included, was killed. (LD: "No Small Parts")