Five witches besides Isabella ward the colony site. Robots guard the site of the portal, obligingly letting colonists through during scheduled trips and reporting to Isabella by mirror if anybody else shows up. Other robots help the colonists with setting up their farms and houses in the warded area. It'll hold a city, no problem, although another transfer of silks and bags to pay for warding a second site is going to be called for before they get literally everyone across, since in addition to city they need farmland, and since they can't build vertically as effectively as fully industrialized Earthlings or the deceased aliens.
One day:
"It's been exactly a year now since you crashed my picnic. Let's go to a fancy restaurant and celebrate."
"Mm." She eyes a pedestrian crossing the road at a crosswalk, and notes the procedure there, as she follows Isabella. "The small paths across the road, only, I expect."
Here is the Sheraton. Isabella inquires if they have a two-bed room open. They do! How fortunate.
How incredibly fortunate indeed! They must look very strange, but Xiara does not look like she cares in the slightest.
The person behind the desk doesn't comment on the period clothing. He takes Isabella's shiny black credit card, and looks sort of worried when she gives him her phone number too to call "if there are any problems; they're from very far away and might not understand how this works".
Her accent is noticeably better than Xiara's. It actually rivals Adarin's extremely clear accent, though she speaks slower and more carefully. She's good with her voice, not familiar with the language.
"Of course," says the clerk, and he hands over two keycards and Isabella leads everybody to the elevator.
Seraphina looks between Isabella and Adarin, confused. When they're heading to the elevator, she asks, "... Why aren't you two married yet?"
"Why would we need to be?" Isabella pushes the elevator call button and an elevator reveals itself to them and she ushers everybody in.
"Because you very obviously love each other?" says Seraphina, confused. "And if you were married it would be harder for anyone to - challenge, or do anything about."
"I really don't see how it would help. We wouldn't be sending engraved wedding announcements to those people." Isabella pats Adarin's arm and presses the number 5 on the wall and the elevator starts going up.
"No, of course not, but it's - harder for anyone to weasel their way into thinking that they have a chance to end your relationship. If he is your boyfriend, he can break up with you and that's it, if he is your husband, there's - it's harder to do, harder to walk away from. They would recognize that."
The elevator dings, and the door opens on a hall of hotel rooms. Isabella compares the signage with the number written on the keycard envelope and leads the way.
"They're unlikely to try and learn about the country's divorce rate. Or about how a witch acts with her - um, lover. But marriage is a thing they can judge by their rules, and act accordingly. It fits with their perception of the world and people... Like sticking to that, rather than letting it be changed."
Isabella demonstrates the use of the key card. "Well, maybe. Or maybe it would convince them that I need to be assassinated, not just dissuaded."
She does not know about witch lifespans.
"...Well, that would work great if at least some fraction of mages didn't know me to be immortal, wouldn't it?"
"... You should not advertise that. Not right now, not when the relationship is comparatively new and they need to settle into accepting that killing you is not the best solution. Who did you tell?"
"That'd be the Liandrils. Okay, they probably told their family and some cousins, but I don't think they would mention it to everyone. I certainly didn't know. They'd want to keep some cards in reserve and waste their rival's chances for action by not giving them all the facts. They'd try the wait you out approach and waste their time. I mean, it's going to get out eventually no matter what you do, but the longer you two are together and obviously not breaking up the better off you will be."
(Isabella demonstrates the use of the faucet in the bathroom while she speaks.)
"Um," says Adarin, finding his voice again in this incredibly awkward topic. "On - which part?"