And Renée makes a suggestion and Miranda sends some owls, all with the same underlying invitation:
Mum wants to go shopping in Muggle Edinburgh and said I should invite some friends. You can Floo in or she can pick you up by Apparition, as you like, and we'll get lunch and she'll have you home in time for supper. Want to come?
She invites Karen and Jenny and Emma and Alli, and as an afterthought also Vivian, since she and Karen have been friendly and another muggleborn might ease Karen's jitters.
"They're not that bad," Alli says thoughtfully. "I mean, they're weirdly tight, but look!" She turns and wiggles. "My arse looks fantastic."
Vivian is not staring at people's trousers. She is not she is not she is not. Look at her over here not staring at anything.
"I think we're good. We good?" asks Miranda. And when no one volunteers a desperate need, she nods at her mum.
"Stick together," says Renée. "I think there's - yes, three and three if we count Miranda. Why don't you all pair off one person who knows Muggle things and one person who doesn't?" She waves vaguely at the girls. "And then if you want to split up or wander a bit ahead of me you won't be caught out too badly."
Miranda nods. "Vivian knows Karen better than she knows the rest of us, I think - Jenny, who do you want? Or perhaps, Emma and Alli, who wants Jenny?"
"-I'll go," Emma says over her. "No, Alli, you may not have Jenny make animal faces at the Muggles."
"To be entirely clear: Jenny, don't make animal faces, or do any morphing at all, so that Muggles can see you," admonishes Renée, while Miranda takes up her post next to Alli. "Any last-minute questions before we leave the Floo station?"
"Don't worry!" Jenny says brightly. "I know the ruuuuules," she adds on a singsong in Alli's direction.
Emma glares at both of them, then attempts a smile for Miranda's mum. "No, um- thank you, I think we're all set."
Vivian considers suggesting holding hands to avoid getting lost. Then discards this immediately as a bad idea. Then recons- no, no, bad idea. "Here," she says, and puts her hand tentatively on Karen's shoulder. "This way you'll know you won't lose track of me as we walk. It'll be okay."
"I have spent more of my life being a-" she waves her hand, for lack of a good public-appropriate euphemism off the top of her head- "than I have at school. I can still say 'we' sometimes!"
"Yeah, but, if I say the wrong thing and you hear me it's not a question of whether you bite, because that's... not... a biting thing. If I say the wrong thing and some stranger hears me it is a question of whether they bite all of a sudden."
Jenny takes a brief respite from expounding to Emma on the virtues of Muggle zoos and their stellar qualities as tourist attractions to contribute, "Nooooo, no biting! Remember: if anyone is nuts enough to ask? It's a book. It's always a book. We're still in school, we can totally read weird books, it's totally a thing." Then she blinks. "Sorry, sorry! No more interrupting, I swear." She turns back to her original topic. "Seriously, Ems, you haven't seen a panda, I don't know how you've lived-"
Vivian laughs. "She's not wrong," she tells Karen. "Kids can talk about whatever, and there's lots of books and movies and such about magic. I mean, obviously be careful, but it's not the end of the world if you forget when chatting or something?"