Like every other Emotion world character she has regen and fast healing, and no she doesn't use fear because people in the Emotion world don't have emotions but are the emotions of the original people. Her ability is to copy and recreate an enemy's attack but stronger than the original, of course it will only exist for a limited time(the new attack that is created) Also if Betty looks like a 21 year old here well she is actually, because Emotion world versions of the original characters are older than the originals. Also like everyone else, if Pink Kumu gets killed Betty loses her emotions, but if Betty is still alive then Pink Kumu will come back to life over time.
