"Let's see some more pictures-slash-videos?" says Bella encouragingly, peering at the projection.
The angle on these things is not right for him to have been standing behind the camera.
"Did you guys not get along when you were ten?" she asks.
"I think I'll go raid your library and wind down for the night," Bella says, getting up from the table. "Tomorrow morning we can figure out some way to make an air-race interesting - maybe there's a bit of the woods gappy enough for everyone's wingspan to provide obstacles if they fly low? - we'll figure something out."
"Ooh," says Tony, and he starts playing with maps on the computer.
In the morning she comes down the stairs, whistling.
"Did you get up early, or just not get any sleep?" asks Bella.
"Morning! Have you come up with a good place to go flying?"
Tony makes there be maps, hovering three-dimensionally in the air.
Bella peers at them. "Oh, neat, this forest has a good ratio of tall skinny trees to low dense trees. We can agree on an altitude limit there, pick a spot to turn back at, race'll be to and fro? I think there's enough room between the one kinda treetops and the other for Rachis to get a wingbeat in, and her wings are the biggest."
"All right." Bella can't really manipulate the maps from here; she picks a visible tree. "That far away enough to make things interesting, you think?"