Leia in Star Wars Infinities: The Empire Strikes Back went to Dagobah to become a Jedi.
The Infinities comic series took a look at what could have happened in the Star Wars universe if certain events had different outcomes. For The Empire Strikes Back 4-part Infinities series this “what if” scenario involved Luke dying in Hoth which led to Leia being the Skywalker that traveled to Dagobah to train to become a Jedi with Yoda.
Leia also faced her father, Darth Vader.
Spoiler alert! Leia does not join her father and turn to the Dark Side. She leaves Dagobah as a Jedi with Han Solo and Chewbacca by her side.