Stormella, the Head Ice Fairy

Spy Academy 10
She first appears when Icy returns to her office and they talk.

She then appears when the gates close telling the kids they can't leave.

She then appears fighting the wolfs.

She then appears when Icy is playing with her friends having memories.

She then appears at the feast.

She then appears when Icy says goodbye, and when she leaves Stormella is looking from her window.