I know Betamon is bigger than that. I threw the little guy in the very last second.

Opal can actually use some attacks in her normal human(oid) form as well. (You see, she considers herself a Digimon.) She can shoot ice spikes and streams of water from her hands.

This is basically just to show 1. her entire body and 2. how long her hair actually is.

Her goal is "to figure out how Tommy, as Kumamon, does that snow pile thing".