"Ah, right." She chuckled a bit and took a few steps back so she had room to spread her wings. "So, it's this thing some of us do, back home. Before Rosamund did whatever she did to my wings, they weren't strong enough for proper flight--so I'd have to catch air currents to get any real distance."
She tipped her head, eyeing the height of the spire, feeling the chill of the air around them, running half a dozen calculations as she did. "Warm air rises. So if we can just catch a warm current, we should be able to get up there."