Pulling volume one off of the stack of encyclopedias, she carefully leans her parasol against the pile, settles into a chair, and flips to the index. Let's see what sorts of things exist in this world, shall we?
The index includes a lot of things, many of which are listed, handwritten, in the index as proper nouns unexplained except via their subsections (for instance, "Oridaan" is next to "Oridaanlan history" and "Oridaanlan physical geography" and "Oridaanlan dialects" and may be assumed to be a political unit). The world has rabbits and chocolate and wine and clouds and a moon and oceans. It has merfolk and elves and dragons and vampires and wolfriders. It has several unrelated kinds of magic.
Isabella is happy that this world includes chocolate! She checks to see if it has tea as well before flipping to the section on the local vampires. The various other magical races can wait: for the moment, she needs to see what her hosts' reactions would be to her asking if she can bite people. She can go without for quite some time, but it would not be comfortable, and if she's really stuck here for a year then she would risk sliding into torpor and that would be rather problematic.
The vampires bite people. There is a short section on vampire religion, which asserts that one of the handful of facts vampires have allowed to leak about their faith is that it forbids them to bite people without permission. Apparently they prefer elves most of the time, dragons when they can get them, and the average person can be bitten by a vampire of about their size once every three weeks if the vampire eats a normal amount once weekly. (At least one country has stabilized into a population of almost one quarter vampires and three quarters elves, which implies very snug arrangements for sustenance.) Vampires here have children in a humanlike fashion and have peculiarly-calculated lifespans and can each turn into bats, which they must do to sleep. They are pale and dark-haired and do not have circulatory systems or digestive ones. They can echolocate. Their bites are painless and can be easily healed by lights if one prefers this cosmetically.
Well, she checks now.
She lets out a shaky breath. Alright, back to the encyclopedia. What is a light, exactly?
Lights also don't have to eat, if they get enough sun, although they do need to drink a lot of water.
Speaking of which, let's investigate the sections on celestial objects. What mystical significance do they have on this world? ... Do spirits even exist in the way she expects? Vampires are apparently somewhat different in this world, as is magic. She should probably not assume anything about how spirits work.
Wait, what? Square? Does that mean that there's edges? Isabella investigates: is this a flat world, or is it a cube or something else that would require even more interesting gravity?
So gravity points 'down' while simultaneously causing orbits. Or maybe the orbits are done by something different, after all this is a crazy world with only half a moon. Why doesn't anything live on the underside of the world, since apparently the reason isn't "it'll fall off?"
The encyclopedia coughs up a summary of colonization attempts. Apparently nobody wants to live there because looking at an expanse of flat nothingness is depressing and you need to import topsoil to grow anything. No projects have accumulated sufficient stable populations to warrant putting in a teleportation circle.
Well. At this point, it appears that speaking to Keo about her unusual dietary requirements is unlikely to get her killed.
Keo? Have a moment to talk about my species?
Offworld Vampire. Have a moment to drop in? Even if I do have mental powers myself, talking to you in my mind when you're nowhere near me is unsettling.
She pauses. "Though it's possible that nobody here qualifies as 'human' enough for my magic's purposes, in which case we will either need to summon some of my blood-servants from inside my castle or I will be spending most of my time here unconscious."
"There are humans. Saasnil's a human, for instance. I don't know that we'll want to summon people for you while you yourself are still confined to ward but we can send your servants a letter and summon blood they draw for you, if local humans won't do. What kind of quantity on what kind of schedule? Are you hungry now?"
"I'm not hungry currently. Weekly for comfort, monthly for... Not exactly survival, as my local type of vampire I'm immortal unless I die in very specific circumstances, but for me to continue functioning. If I don't eat for much longer than that, I will begin to uncannily resemble a corpse, up until someone with a pulse strays too close to me, at which point we will both regret the situation."