It's not real, it's something some random person made up. You'll see this sort of thing pop up on wikis occasionally. If you click the link for the page on the first movie in the trilogy, it's both a "fan film" (which sort of exists: https://m.youtube.com/watch?v=CC9fYUDQ6CM ) and directed by James Cameron.

The book version is real though: https://starwars.fandom.com/wiki/Star_Wars:_The_Thrawn_Trilogy

Her being a new Maris would probably be too hard to keep secret.

There's also that Frasier-Voyager crossover skit they did.