What is the redeeming characteristic of FOLLY?

[phaeous]

The word, not any name.​

 

[Representing_Tromba]

They made a mistake they didn't mean to make. Thus, they can be redeemed by trying to make up for it, especially if they feel guilty ridden. If a character dies due to folly then it's a great way to induce a redemption arc or an anti-hero arc due to being cast out of the main group.
As for characteristics,

Guilty
Apologetic
Desiring to fix mistakes

 

[ThrillingHuman]

It's a four letter word starting with f, so you can replace some other four letter word starting with f with it.