I guess I would call it more a redemption story arc than a zero to hero story arc. The reason I chose Encanto was because her character started off powerless through no fault of her own and later realises her power that she can use to help her family. So to me that is a zero to hero story arc. But if the protagonist is the cause of the problem then the act of fixing the problem is the character trying to make amends which to me is more align with a redemption story arc.