Mîr grows. They have a fun challenge integrating various populations - Thindar Elves who follow Lúthien preferring her to her father, smaller groups of other populations who want to live in a wild liberal state, not many Noldor; humans who are not pleased for whatever reason with their conditions on Earth.

They could just get married on Mîr. Is Lúthien sentimental about it being Canada?

Not especially. Their own planet's pretty great, too.

It is!

They can amuse themselves planning a huge royal wedding with all the frills. Coincide it with the formal coronation with the crowns Maedhros promised.

It's going to be the most fantastic royal wedding party in Earth or Arda's history! The crowns arrive in advance, and they're stunning.

Bella thinks it might be fun to honeymoon in a new dimension, because lounging around on a beach or something would get boring. ...Then she gets way too excited planning first contact procedures and is not sure if she can wait that long.

They're visiting Lúthien's parents who are not going to her wedding party and she's glad enough of a distraction. "...want to go now? We can make it back in time for the wedding."

"...sure, let's."

"Safe for us, habitable, contains people, anything else?"

"...not behind closed doors..."

"Yes, yes, lesson leaaarned - " Pop.

- and they are in a forest under four suns of various colors and sizes and a girl runs past them as though for her life from some kind of horrible giant centipede thing.

The giant centipede thing will be a quarter-mile away! Hi! she says. Oh, wow, this place is pretty, I'm Lúthien and this is Bella, nice to meet you!

The girl shouts something, not having looked over her shoulder to notice the absence of centipede-thing.

I sent it a little ways away. I can send it farther away, if there aren't any people in the direction I sent it.

She looks over her shoulder...

...jogs to a halt...

...says something else incomprehensible.

Maybe lead with being telepathic and not speaking her language.

Right.

We don't speak your language but I can communicate like this, through thoughts. 

That's weird and you're weird but, uh, thanks for getting rid of the demon? How did you do that?

She bounces this to Bella.

I can teleport things. I teleported it away, if it's really dangerous and we should kill it then I can do that but we'll want to talk with it first.

You want to talk to the demon? They don't talk, they don't do anything but eat people.

Can you find our brother and his cohabitor, he's around here somewhere...

She sends Bella this too. Yeah, I'm going to him, be right back -  teleport the two of them to this girl's brother and 'cohabitor' ...

It's a tall white-blond boy who looks absolutely nothing like the girl, sitting up in a tree, looking around anxiously.

Hi! I'm Lúthien and this is Bella, empresses of Mîr. We don't speak your language but we have communicative telepathy. Your sister - she sends an image - asked us to find you, do you want us to take you to her?

They're okay? Where's the demon?