He heads to Prime's world.
"Hey," he says. "I need you to do something."
"Cam. I'm her boyfriend. Uh, and -" he peers at the mirror, judges the odds that it was made with demon magic or parlor tricks low, and continues, "And we are all three of us dead and she wound up in a different afterlife than me and Zane did."
"... Wow. An afterlife? Prime - we should get our sisters, who knows how long they've been separated."
"Hi, I'm Isabella Marie Swan, and that's Iobel Maryah Swan, and that's Isabella Amariah who neglected to inherit the surname Swan from her dad, and that's Ayabel of no middle or last name."
"We'll want to get Rae to check, but it looks that way. Rae can tell - you'll notice I don't look like the other Bells."
"- This is all really weird and I'm not sure I'm following one hundred percent, but I have a question. We're all daeva, can't you just summon us? With a circle and such instead of - mana?"
"I don't know if it'll work from all the way over there, but here's what circles for me and Zane and Adana would look like," says Cam, producing a piece of paper and holding it up to the mirror. "Is the resolution on this thing good enough for you to get the detail?"
Max squints. "I think I can do that. Let me find an open spot and try it. Unless anyone's got objections?"
"Do these need to be drawn in any special way, with any special material, at any special size, or accompanied by an incantation or anything?"
"Leave closing the circle part for last, any material will do from blood to crayon to projected light, has to be on a floor or the ground and big enough for us to stand in, and that's all."