And oh gosh phone calls. Brandu to Song duh, Marti.... e ve I think she'd be freaking out too badly to do anything but maybe 2/3? Breeze'll probably call Est and pretend nothing's wrong because sad Est does not fly with her. Nope. She might even come back as a ghost to haunt people for kicks and giggles if she had the chance mwahaha and make sure her silly soldier's taking care of himself?

Harper would call his family. They'd freak out and ask him all sorts of questions. He wouldn't answer, he'd tell them that he's okay and that he's with good people, ask them how they're doing, ask them about his sister, tell them he loves them, and if they pressure him for answers he'd avoid it. He'd try to have a normal conversation with them because like Breeze, he doesn't want them to worry. His parents will try to trace the number, but there'll be nothing xD

Riley would call her best friend, Kim. She'd think about calling her folks, but she can't tell them about Nowhere and she really doesn't want their last call to break their hearts. Kim will freak out, ask Riley if she's okay or if she needs the cops or anything like that, and Riley will try to joke around. Kim will be get angry, because it's been four months and if this is some joke, it's a really cruel one.

Riley: No...*long pause* I just ran away with a rock band, yeah, everything is great, promise.

Kim: You're lying.

Riley: No, the drummer is really cute. *Cue muffled cring* Hey, Kim...do me a favor. Tell mom and dad not too worry to much, I'll be back, we're just going on a world tour.

She'll attempt to make small talk, ask about her folks then hang up. Kim will call the cops, but once again, the number won't be traceable at all.

Ace wouldn't make a last call. She feels that whatever she needed to say to people, she has already said.

Though if she had to make a call, if anyone, I dunno I guess Harper. She'd make sure to remind him one last time to toughen up and lead people to metaphorical and literal victory. Then tell him to like spread her legacy of how awesome she was to everyone because why not. And just for the laughs, she'd probably tell him to go date someone.
She wouldn't intentionally tell him that she was dying though, instead she'd tell him on accident and then threaten him to stay calm or she'd personally knock some sense into him. In the midst of him panicking, she'd basically repeat herself *see beginning* and then her last words would be,

"Live your life and make it awesome!"

And then she'd hang up.