Each school sets their own policies. Most over-award. They use models that tell them how many they can award, how many will likely decline, and how many will likely enroll.
$4k per year isn’t much for an OOS student.
If your daughter had applied to Alabama last fall and had gotten the ACT 30 in Dec, her award absolutely would have gone from $6k per year to $19k per year…assured. Wouldn’t have needed to worry about funds being left.