One of the most awkward things about being the leader of the host is that Isabella has to issue assignments to people who are or have been in positions of authority over her. Delilah knows enough about what needs doing to keep herself occupied with useful errands when she isn't explicitly enjoying her retirement, but Rinnah is another story; she doesn't quite grasp that sometimes her daughter wants to talk to her for non-social reasons, might really just mean to talk to her to send her a hundred miles west and pray for rain.
This is how Rinnah winds up with the privilege of taking her eldest granddaughter on her first weather intercession.
(Rinnah was told about magic and worlds and Jovah a month prior, and absorbed all this information with admirable calmness, and proceeded to behave as though none of it makes a whit of difference - which Isabella has not prodded at, since of course this is optimal for secrecy.)
Rinnah knocks on Damaris's door, in her flying leathers, grinning from ear to ear.
"It's convenient!" agrees Rinnah. "But if you want to do any things with your nice cooperative numbers you need to know how. If we can fly forty miles in an hour, and we are going to intercede at a settlement that is one hundred miles away, how long will we have to fly?"
"A little less than a hundred miles. We are going west, except that when we reach the river, we'll follow it south, and there we'll find a little town that needs rain."
They reach the river, and turn south, and find the town, and they land for Rinnah to ask about the details of their needs, and then they go aloft and she starts the correct rain-inducing prayer for Damaris to harmonize with.
When it is a couple of hours before dark, Rinnah says, "It will be easiest to find the Eyrie again if we go now, so we don't have to look after sundown."