New Bark Town isn't anywhere that you know. People you see on the PokeGear, which is the thing you're holding, aren't from here, either - though some of us have been here for years. But wherever you were, things will basically be paused there until you're returned home - and no, we don't know how to get that to happen on our own.

The creature with you isn't a horse, by the way - it's a Ponyta. And it's yours. It's a creature called a 'Pokemon', and people battle them here. Don't worry, there's no real permanent harm done to them. That's how they train, and a lot of people here, natives and otherwise, make a career out of training and battling them.