It is nighttime, but the Lands Between are never dark. Even with sun's light, the world is lit by the Erdtree, the stars, and the moons - her mother's Full Moon, her aunt's Twins, and the Dark Moon that is her own.
Ranni stands on western edge of Moonlight Altar, from where she can see all of the moons. She sits alone, in contemplation. Silently, she asks questions of her moon, and her mother's, though they never answer directly.
It's kind of weird that the stars are so visible when the Erdtree's glowing so bright but that seems like the kind of thing you're not supposed to think about too hard.
Eventually she starts reading a textbook for lack of anything better to do.
She's four chapters in before she realizes that it should really feel like lunch at this point, and being stressed out from the spontaneous teleportation accident explains some delay but not four chapters' worth. Maybe it's one of those times where she'll be abruptly ravenous if she takes one bite.
She'll step into the hall to look for a page.
There's a man sitting in the hallway, with fine but not extravagant clothing.
"Do you need anything, milady?"
"...I don't know what you have here. I'm not picky. If you're going to pull exactly whatever I suggest out of a magic kitchen appliance I guess I want a roast beef sandwich with pickles."
"I'll see to it."
He leaves, and comes back after a short while. 'sandwich' part is clearly improvised, but it is as requested.
It's a sandwich, in a sense that it's roast beef put between pieces of bread, but it's clear that the components weren't originally made to go together. It's good though.
She doesn't become ravenous when she takes a bite but she can chomp her way through the sandwich on general principle and then go back to reading by the window.
Eventually, the sun rises over the horizon. The stars fade away, but not completely, still slightly visible even in daytime. The dark moon hangs there, stationary.
She's not really tired, it's probably not bedtime yet in her time zone, but when she notices the sun coming up she'll pull the curtains shut and try to sleep to get closer on that front. For all the copious socializing she's doing. Yeah.
She can fall asleep easily, and sleep for as long as she wants.
After a few hours, there's light knock on the door, if she wants to wake up for it.
She gets up. She's still in her clothes, so she just goes straight to the door, running a hand through her hair to get it more or less all going in the same direction, and opens it. "Hello?"
"I've been comfortable, thank you. What time is it? I had a bit of a nap to try to get closer to the local schedule and now I don't know."
"A quater of the way through the day."
"If you are not occupied, Ranni wanted to introduce you to some of our friends."
Blaidd leads her to a small outdoors forge, where a number of people have gathered.
One of them is a giant, sitting behind the anvil and reading a book.
There's also a person dressed in formal robes, with a big hat, and a mask that completely covers their face.
"Welcome, Bella. I am Iji, blacksmith to the Carian family. I heard that you are from beyond the fog? It is always interesting to meet someone from a new land."