"Appear to them - now with new and improved anti-nudity algorithms - introduce myself, ask them if they want brainphones?" she shrugs. "Is there some non-obvious other way I could be of help?"
"It's not like I can't teleport onto a plane," Bell points out. "Pepper? That's a cute name."
"My real name is Bell. The shell part is a nickname. Remember how I was bringing shells into Milliways since I was six? It doesn't warn me when it's going to give me a door, and having shells on my person or not was the difference between staying three days, starving, or staying three weeks, getting a reasonable meal every day and more time to learn things and look for some magic or tech I could take home and be that little bit safer. I left bags of clamshells near every door I ever went through and pitched a fit if someone moved them. The rhyme just made it even more obvious."
"Huh. Anyway, do you want me to go see about talking to your friend who might be on an airplane?"
Shell Bell waits for this result to be interpreted in the form of a should or a should-not.
[Soooo,] says Darcy, [can you put Heimdall on the brainphone from where you are?]
[Done,] she conferences to Darcy and Heimdall both. "I just added Heimdall to the network," she informs Tony, "so if you don't want to talk to him, you can set up a busy message instead of being surprised if he talks to you, though I have no idea if he's likely to."
"You know, I really wish there were a good way to set up Milliways-independent interworld travel," remarks Shell Bell wistfully. "But I can't do it even with the pointiest wishcoins Sherlock ever makes for me."