Oop. Looks like they struck a nerve. Both Heidi and Vivienne froze as Rose snapped at them. It would make a lot of sense that Rose would take this so poorly. This was made even worse when it was clear that she didn't even know that Izanami was alive.
"...Sorry. We should have been more considerate. In my time, it's something that Zinnia and I look back and laugh about, but that's because it's been eons since it's happened." Though, considering that Rose didn't even know about Izanami, it made some sense.
"And, yes, Mother has returned. She... reincarnated as the World Cleanser's daughter... which means that, yes, the Golden Arceus has also come to life." Rose... has missed a lot, hasn't she? "She can even make multiple copies of herself according to Heidi. I even spotted one walking with Diantha a few days ago."
Heidi nodded... but then blinked. "Well, you have your phone, right?" ...Then, she paused. "You did make her that phone, right?"
"Uh..." Vivienne blinked. "...what phone?"
"...Oh you've got to be—" Heidi looked disappointed. "Vivi. You're telling me that you just let your daughter down and deep in that cave and didn't even bother consider getting her a phone that can have service down there so she can keep in touch with the family?"
"I... uh...." Vivienne paused. "Ohhhhh, maybe that's what I was in the Department store for...."
The former dragon turned full Arceus and glared directly into Vivienne's soul. "Vivienne.... I KNOW that Present-Day Latias-me and you TALKED about this by now, y'know, as a thank you gift. Swear I'm gonna shove an Unown in your phone to have the network track your fucking forgetfulness." Why is Vivienne like this?
"Eep!" Good to know that Heidi still has the capacity to spook the living daylights out of her. Does she know that Heidi won't hurt her? Yes, but it's still a stark difference from her normal self. "I'm sorry!"
"It's not me you should be apologizing to, Vivi...." Heidi sighed. "Knew I should've asked Rayquaza to get the damn phone."
Vivienne bowed at Rose. "I uh... yes. We were planning on giving you a device to keep in touch. I was supposed to order you a phone and Heidi would modify it to ensure that you had signal, but... I... forgot. My deepest apologies."
Heidi returned to her Heidi form. "Since the Skitty's out of the bag now, I can summon Ghost and make a phone for you that can communicate between dimensions, even when you're deep in the cavern. How's that sound?"