Shell Bell doesn't get off the train immediately when they hit District Three. Tony has one last miserable speech to deliver, and the train will then stick around long enough for everything to be unloaded. Bell sits tight in Sherlock's compartment with the TV on, keeps her wits about her, and awaits cues from either Stark twin.
Afterward, he comes back to Sherlock's room and has one more go at the door.
"Oh, thank goodness," breathes Shell Bell, and she scurries through.
After she's been there for a couple days, local time, she wakes up to find decorations everywhere. It must be another holiday. She overlapped with one before - it was called Crismus or something like that, this was before she got her recorder - and the color scheme and the symbols were different, but it appears to be the same phenomenon, just a different underlying holiday. Pink and red and white. Lace and ribbons and endless repetitions of a shape like a mirrored, unbroken wave. She pays it no attention.
At around Shell Bell's subjective lunchtime, Sherlock enters the bar and commences searching for her. It ought not to take long.
(Bell is determined not to be awkward around either Sherlock or Tony, despite what she wound up informing herself the previous subjective evening talking to her recorder alone in her room. That segment is locked; it'll act like it's not there until she authorizes it, even if she carelessly plays through a time period that includes it.)
"We are safely home, and you may return at your leisure," she says.
"Great, I," Bell says, standing up, and then she says, "ow!" She feels at the back of her neck, confused.
Then she claps her hand to the side of her neck and spins, staring intently in the direction from which the mystery projectiles came.
It's up in the rafters, and as far as her senses can detect, there is absolutely no one there.
"What was that?" exclaims Bell. "I - what - Sherlock - what was that?"
"I feel strange," Bell says, sitting back down hard and looking with a despairing expression at Sherlock. "There's - were we drugged?"
"I... am not sure," she says slowly, frowning. "Not by anything I recognize. But at Milliways, that is hardly the final word."
"I don't know what else - I - I want -" She sits bolt upright, and says, "Something is wrong. Something is really really wrong."
"Whatever just bit me is messing with my brain. I did not feel this way a minute ago, I did not do it on purpose, and now it is happening anyway, and I am scared that that can happen, and even though this is part of the problem all I want is for you to hug me and tell me it'll be okay," says Bell, bursting into tears.
"...I don't know what to do," Sherlock says helplessly. But regardless, she finds herself reaching across the table and touching Bella's hand.
Bell squeezes Sherlock's hand hard and drops her face into the other elbow, sobbing.
"I am experiencing a similar problem," says Sherlock. "I don't know what is going on."
She squeezes Sherlock's hand again like she believes herself to be dangling over a pit suspended by nothing else.
But she doesn't actually know that.
She takes down the sign.
She seems to be recovering a little from her panic, although she's not less upset, just less out of control.
She reclaims her hand and hugs herself, in the absence of Sherlock hugs.
Sherlock comes around to the other side of the table, leans on the corner of it, and hugs her.