And someone who is more experienced with using the teleport for things like that is summoned and - 

The Ways are home.

"I should teach someone how to use this crystal ball, it's our interdimensional communications interface," Larya says, looking out on foggy England. 

"I would love to learn to use the crystal ball but first I need to write my mum and some friends."

"Of course."

"Is there a safe way to check if everyone's alive before we draw attention to the fact we are -"

"I can go check if you tell me where, I'm indestructible. Though that hasn't been tested against local magic."

"It's not impossible they've moved. Would you like to be lightly hexed as a test -"

"Indestructibility means that minor things affect us normally - pricking me with a pin will have the same effect as pricking anyone with a pin - but shooting me won't have an effect past that. If you can think of a good test -"

"There's one Karen knows that does rabbit ears."

"By all means."

Karen is fetched from writing her parents and hexes rabbit ears.

Which works. 

"In that case," she says, "we probably should be very cautious operating in your world -"

"I maybe don't want anyone who can't throw off the Imperius and has an interdimensional teleport running around here - while she's still alive, certainly, but even after -"

           "Yes, that seems a reasonable precaution."

Karen fixes the ears.

"We'll go discreetly check how things have held together, I guess."

There's a knock. 

Miranda peeps out the window.

Fredrick! Pacing!

"Timothy, it's Fredrick."

"- huh." He gets the door. " - hi."

"She's dead. A couple places considered reversing their non-intervention policies, considering, but we persuaded them not to, and with the 'magic is allowed as long as you have an ounce of subtlety around it' status quo we set up water treatment everywhere, recruited a little crew of idealistic recent graduates to go around ending famines and wars, made Haiti the nicest place on Earth and asked them how to fix slavery everywhere else. James and Samuel are there right now. She thought you were dead, how are you not dead -"

" - we got sent to an alternate universe. You - how - are you all right -"

"I am not less all right than I'd be if I'd stayed home moping the whole time."

Timothy turns around and looks at Larya and raises an eyebrow - looks at his assembled family members - 

- turns back around and picks Fredrick up and kisses him.