But he thinks you're dead, will he think someone's pretending to be you? You could speak one of the other languages you taught him...

Could do. Might also be weird to have someone who sounds like him as a smol talking to him for similar reasons.

Bella's good at not sounding weird and explaining things well.

Am I? Okay, I can call him but should I open in Pax or not?

Yeah probably because then he'll definitely talk to you even if he's changed a lot and is really suspicious or something, he wouldn't miss out on a language from another world.

Okay.

...Right now?

Why would we wait?

I don't have a reason but someone else might have.

She picks up an earwire and takes a deep breath and reaches for the local Fëanáro and says in Pax, Hello, I'm checking to see if you're alive or not.

Confusion. Hello, he echoes... who is this?

"...Khersis Dei he's alive." She switches to Quenya. My name's Bella; you don't know me. I'm from another world.

"He--really--I thought it was just--really?"

"How--no, that's not the most immediately important thing--tell him we're alive? When it's an appropriate point, I guess?"

"Will do."

Hello, Bella.

Are you in my home somewhere? 

- switch back to the other language, please, I'm not familiar with it -

I will be happy to teach you Pax after the essentials are out of the way, she says in Pax, and then in Quenya, I'm far away but using a magic item that closes osanwë range. I'm with your daughter-in-law Idaia and her sister Imliss and a younger version of you from an alternate Arda.

How are Idaia and Imliss alive? An alternate universe Arda?

They reincarnated and got their memories back partway through. And yeah, in my Arda the you is not quite twelve yet and also I shook things up while I was there but there aren't any discrepancies we can't attribute to that.

I do not find any of these claims very plausible.

Yeah, I wouldn't really expect you to; this is part of why I opened talking in Pax so you'd at least know I was weird even if you didn't believe I was the specific kind of weird. Is there something I could ask smol-you or your daughter-in-law to confirm?

Idaia could describe her house in Formenos.

"He doesn't think I'm legit and wants you to describe your house in Formenos," Bella tells Idaia.

Idaia closes her eyes and begins reciting features of the house.

Which Bella passes on.

How do dimensions work? How can people travel between them deliberately? Are there infinitely many, why hasn't this one been contacted sooner, wouldn't the most advanced one with the means of travel go around exploring each of the others...

Yup that's a Fëanáro. I fell into my Valinor in a magical accident and didn't want to go back because my home world sucks so I didn't prioritize interplanar travel, but the Valar kicked me out and smol-you invented a spell in my world's magic system to rescue me but before he did I met Idaia in a confusing interplanar bar and went home with her and his spell targeted me and not my world so now we're all here. My home world is aware of several other planes but it and all the planes it routinely contacts are fundamentally opposed to the concept of science so they're not very systematic about doing anything with them. According to the proprietor of the confusing interplanar bar there are lots and lots of worlds; she didn't give a clear inifinite-or-not-infinite answer though.