Maybe I missed some info on this, but let me explain:
I just found Red in Junktown and had her join my party.
Whenever I win a fight though, she never gains EXP, i.e. her exp gauge stays the same.
Did anyone else have the same problem?
If she is above the other party members in level, she won’t gain any XP and they will gain more. It’s the game’s catchup function.
Also, if you fight enemies that are too low level, you may gain no exp.
I see. Thanks for letting me know!