In 2371, Megan, along with her twin sister, Jenny, was assigned to stellar cartography aboard USS Voyager when that starship was pulled into the Delta Quadrant. Tom Paris became interested in her shortly after the vessel became trapped in the quadrant, and wanted to date her – however, because the sisters did everything together, he needed to persuade Kim to join him as Jenny's date, a task at which he failed. (VOY: "Time and Again")
By 2375, the twins had become good friends with Paris and Kim, and joined them in Tom's The Adventures of Captain Proton holo-program. Megan played Demonica, one of the Twin Mistresses of Evil. At the time, Harry had become infatuated with Megan, much to her sister's annoyance.
When their time on the holodeck was cut short, Paris asked Delaney for an update on the star charts she had promised to have completed the previous day. Delaney noted the sensor array had gone offline, and was waiting for Seven of Nine to finish repairs that morning, promising to have them to Paris by 1400 hours that afternoon. Kim offered to help to assist, but Delaney declined. (VOY: "Thirty Days")