Well you'll have to forgive me to answer your first question I'll have to answer the second first.
Cliteater isn't a newcomer to our world you see, she's been around for yonks, that's what most people down the food chain like y'all don't really seem to comprehend. Oh don't blame yourselves, knowledge is power and your mistresses do their best to keep their pions ignorant of what's really out there. Demons have been around on this planet longer than humans have, this place isn't special to them, it's just a place to amuse themselves, like an anthill that little kids play with, actually that's exactly what it is. Oh do you guys not know that? Yeah there's no great war over souls or whatever, I don't really know what happens to you guys after you die and I really don't care, I'm moving onto better things; the big secret is none of us really matter and most of the demons who actually matter don't even know we exist, the ones we see here on this planet like Regina and the Cliteater are basically awkward adolescents who don't want to face their real world problems so take out their frustrations and inadequacies on us mere mortals.
These demons have been around forever and have scarred themselves into our collective unconsciousness; they come in the forms of violence, sexuality, gluttony, ambition, all kinds of fundamental shit. They leave their marks in our mythology, usually in very fundamental ways that we just blow up in our cultures, but they're all universal and they're everywhere. I'll give you one very good example, Regina's been around here for a long ass time well before she settled down; you ever hear of the 'tickle monster' before? Where do you think that came from originally?
Regina came to this world and she saw us, she thought we were adorable; I guess we should be thankful she didn't just outright eat us when she first found us, it says a lot about her when she's surrounded by monsters who do horrible things to us, so much so we associate them with hell, that Regina just tickles us and thinks of us as her own children. And she must've loved us something good; she loved us so much she embedded herself in our collective unconscious for most of our species' existence, kind of like she was trying to groom us or something.
I didn't answer your question you say? You want me to get to the point? I'm getting there. Why did I teach those hippies how to summon a demon and set up a cult? Do you really think this was the first time I did this? Our family has been doing this for decades now, practically for as long as Regina came here to earth.
Why are we doing this? It's like setting out the red carpet for an honoured guest, Cliteater's going to be coming here soon, here to stay, and we want her to feel at home. That's how we know her, she and Regina go way back, not unlike Farah and Vanessa.
You think Regina's content to just stay in this one little corner of the world? This little sandbox is going to be all hers, her own little slice of the playground all to her own, she and Cliteater are going to take over good and proper and we're all going to be their children, which personally I find preferable to the way things are now, at least she knows how to treat people right.
Our family's going to get much, much bigger, there's going to be a time when the whole world will worship Regina and the Cliteater as goddesses, and we'll rule over all of them. Don't tell me you don't want that, don't tell me that doesn't appeal to you, people would kill to be in our family, now they won't have to because everyone's going to be an honorary member. We're all hers, always have been and always will be, it's just going to be official now, we're going to live in paradise and she'll become the goddess we truly deserve, as for you I suggest you seriously consider converting.