What are your characters doing in quarantine? (Or how would they be doing if they were in quarantine?) How would they feel about it?
Chelsea: Watching concerning amounts of YouTube, doing holographic puzzles, playing piano, practicing lockpicking
She'd be chill with it. "Cool, I've got some extra time on my hands. I can finally start working on my 34 unfinished projects!"
Theo: Playing solitaire, doing archery in the backyard, playing chess with Chelsea, reading textbooks, taking walks
He's a little anxious and he doesn't like being cooped up, but isn't breaking down. "It's not the apocalypse, but it is getting a little dull. I could use more routine."
Cody: Playing Minecraft with everyone, reading fantasy novels, doing bookbinding, catching up on shows
He's a little bored (he's an only child), but he's happy that his parents are home all the time now (his parents are away a lot on business). "…I'm actually okay with this. Like, the staying at home thing, not the people dying thing."
Meryn: Gardening, doing experiments on her plants, taking photos, internet shopping, drawing
She's fine with staying at home, but she keeps herself busy to avoid having to think about her condition. "…I mean, yeah, it's a thing, I guess. I don't have to go to school and interact with people I don't like, so that's cool."
Aysen: Petting his axolotl, doing card tricks and practicing sleight of hand, working on his RPG game, dancing, playing piano, watching Chronopoint (a fictional TV series in my universe) and talking to the group about it
He misses being able to see everyone and being able to do stuff with them, but he keeps up with them and does stuff to keep himself busy. "I guess things could be worse, right? At least I have some time to do stuff I like."