I like to think Biccon didn't die, so much as go off into the universe to find a way of purifying her, shall we say "spotty," record of vision interpretation. Honestly though, I'm okay with never knowing. Sometimes people just fade into the ether, leaving us to wonder what final adventure they sought before whatever fate had in store for them. She was always one of the most tortured and enigmatic characters in the BattleTech universe, and not in an annoying way, either.