She considers her options, briefly, then decides that she really can't resist investigating. Risky? Perhaps. But it'll bug her if she doesn't figure out what's going on. She informs several people that should likely know that she is going into a strange magic bar thing, and then in she goes.
Conversation trails off from there. Much later, after exploring has been completed and people have been spoken to:
"How long are you planning on staying in Milliways?"
"I was just going to leave this manifestation here indefinitely," he says. "Collecting disease immunities and perhaps offering to let someone immigrate once in a while."
"... That is a very good idea," she says, after a pause.
She sounds vaguely like she might like to borrow it.
"Agreed. I'd forgotten that leaving my manifested form here was an option. I'm not used to parking them places, usually they're travelling all over creation to poke people."
She laughs. "Yes! Very convenient. I can have a body dedicated to sitting. That'll be novel."
"Feel free to tell me if you find someone interesting that you think should be blessed and poked."
They turn out to make a really excellent team. They want the same sorts of things. They have powers that work in similar, companionable ways. Somewhat hilariously, they even have blessing sets that work extremely well together. ("Danger sense and a resistance to panicking, both - I don't think we could have planned that better unless we sat down after starting and working it out," comments Tisvetaia.)
More holy objects are exchanged to bless each other's mortals. They bless each other. They bless and poke people they meet in Milliways, often taking different sides of the bar to cover more ground and informing each other when they find someone who could use some blessings or pokes of a specific kind. And sometimes the bar is empty, and they can keep each other company and talk about how their domains are doing.
During one of these moments: "It strikes me that you could send a couple animal manifestations to my domain, to spread and collect disease immunities. I already have a system set up for people petting animals for immortality, my mortals will adjust pretty well to it, and obviously we can just coordinate as we like. I don't think my neighbors will mind."
"I'd like that," says Kirovalin. "You could do the reverse, too, but I have a lot more people to cover than you do."
"Just a bit," she snorts. "But I'd be happy to. I could get your advisers and acolytes for sure."
"I try," she says lightly. "Give me a little while, I'll send some critters over and open the door for them when they get here."
After a span of time, her animal manifestations arrive, and she opens the door for them. They are birds, because flight is handy.
They're very large. Not outrageously so, but definitely in the top tier of ordinary bird sizes.
In they get to go to her domain!
Her domain is nice. It's warm and fertile (which is unsurprising, since she's a volcano goddess) and her temples accept people in need and provide them with food and lodging and if they would like, something to do. She gets along with the established mortal government (and has a habit of prodding the nasty members of it to get them to stop mistreating their people, and blesses those who are good...) and makes a habit of making it clear that if people would like to talk to her they can address her directly. She organizes regular immortality poking rounds, of which she neatly incorporates Kirovalin's birds into.
His population is very pleased about this cooperative effort of his.
That is to say: Three hundred million people discover Tisvetaia's existence and are pleased about it.
There are some things she loves more than the rush of power from lots of people thinking about her, but it's not a long list.
There's only one thing to do in response to that, isn't there? Make more birds, obviously, and cover more of Kiro's domain, and distribute lifespan extensions more thoroughly. Whee!
(Also expanding her domain a bit and maybe adding more to her efforts to make that decay god neighbor of hers go away, and add another human manifested form or two to run around and poke more people outside of her domain...)
A few months into this cycle, Kirovalin says: "Some of my advisors have suggested I raise a seventeenth province out of the ocean and turn it over to you."
"We are likely to need some expansions to deal with extra population," she muses. "Ultimately part of your empire but technically under my control and general authority, prod you for major problems or things I don't know how to handle? It's not like I have practice ruling mortals. I'm not unwilling, mind, just - logistics and organization structure are important."