I'm guessing your champion spent alot of time in the field just to avoid going back to the castle LOL Sadly enough there was a bug with the twin though. Couldn't heal her, and When I took the group into combat, after you used the first one (had a bow) the twin could keep firing without loosing any actions. So she could pretty much sit there and wipe everything out.
With all due respect, I believe you're misinterpreting the situation - this is no twin at all. Your champion has clearly gained the ability to time travel: by moving backwards in time briefly, firing, and repeating, she has plenty of time to wipe out entire enemy armies, with the unfortunate side effect that she runs into her past self. Confronting one's own time travel duplicate generally causes insanity and/or the fabric of space-time to be ripped asunder; consider yourself lucky that she merely lost the ability to heal.
Edit: that, or a radiation magic dose of unknown origin has granted her superhuman speed: moving so quickly that she appears to be in two places at once, she can wipe out enemy armies before they have a chance to react. The inability to heal is naturally a side-effect of the radiation magic.. seriously though, a 'twin' is the least likely interesting explanation.
