Janne graduated from the Norwegian Theatre Academy in 2000. At the Ibsen Theatre in Skien, she starred in Til Helvete Heller by Sverre Udnæs and Tiden er Vårt Hjem by Lars Norén. She has been employed by Trøndelag Teater, where she played the mute Kattrin in Berthold Brecht's "Mutter Courage".
Janne travelled home to Kristiansand to play Sirikit in Kaptein Sabeltann. She was to play the leading part in Hamsun's Mysterier at Agder Teater when she was offered the part in Buddy. She has been on a nationwide tour with Riksteateret, playing the part of Hilde Wangel in The Master Builder by Ibsen.. This May, the play appeared on the National Theatre, where Janne will be working the coming year.