"Yeah, probably. And it doesn't seem wise to provoke the omnipotent deity with very unclear motives."

"Exactly."

Sigh. Could you check on Earth what would happen if you went to Arda and then tried to talk to her?

Not sure that avoids the problems of checking here but in principle I could.

Seems likely to be safer -  I doubt she's omnipotent in all universes - but probably not safe enough to be worth trying.

Valar can do portals; I'd hesitate to assume Eru is any less capable of Earthly interference.

Well, forgetting the astonishing negligence that was prehistory, she's doing okay. Maybe she'll keep doing that.

Here's hoping.

London-New York portal! Laurië is slightly annoyed to have her musical career obviated as the main Elven source of ridiculous sums of money, but no one notices but her big sister. She's still their best PR, anyway. Construction begins on a major airport in Madagascar.

She continues not to meet anyone who is as brilliant as Isabella.

Isabella continues to work on magic and Elf/Earth relations and plans for Secretly Florida.

And one day:

Hey are you busy?

One sec - 

And she sends off a memo and directs a problem at someone better equipped to handle it and - no, what's up?

Pretty sure I can get you eidetic now.

Oooooh!! Do I need to come find you?

No but I wanna see the look on your face.

Pffft. Coming.

Isabella looks so pleased with herself.

She bounces in. "Hello!"

"Hi! Ready? It feels kinda disorienting for a minute when it kicks in..."

"I am so so so ready."

Bam.

She has an eidetic memory! It's so clear, she's so happy about it, she can have a kingdom of a hundred million and know all their names - once she's a bit less disoriented she opens her eyes and beams at Isabella. "You are my favorite person in all of the universes."

"Excellent. I think I'll take a raincheck on my anything for now."

...right, that is in fact a thing she said, "I would offer you - well, not the empire, I don't know you well enough, but anything else at all that is in my power," she remembers it vividly. (The tips of her ears are slightly pink). 

"You can have the empire now, I know you well enough."

"For example you know that I wouldn't take the reins on a competently run empire without more time to prep." Pause. Glance at ears. Headtilt.

That just makes them pinker! "And the Noldor aren't very fun to run anyway, and Secretly Florida's already half yours."