If my mom owns a piece of land, does she own it to the center of the earth?

like i always thought that when she owned out yard and stuff, that was it. then my sister came home with a project about the center of the earth. apparently my mom owns the dirt and mandible and part of the little sun in the middle of the earth and out the other side too (we could seal it and get rich! :D), so if escevaters tried to steal the dirt and manible and sun part from under our house, could we put the escevaters in jail for it? would the world collapse and explode the little sun into little balls of fire and manibles? i told my sister that the escevaters might be put in jail, and she wants their shovels and flashlight hats when they're done. she keeps insisting that we're gonna travel to the center of earth and out the other side, but i told her its like 500 degrees in there and wed need special space suits or something, any help with that too?