Nah, for stuff like this you never really need any approval! =) Just go for it! (Which it looks like you already have! Awesome. XD Will tag those in a moment!!)

As for how she and Sonny could meet, there's a few options! Sonny often naps outside in Pokémon form, especially in Summer. She could find him doing that! Or playing Ukulele as a person outside. Or maybe he could find her in the kitchen - would she ever go in there to play around? Or maybe she could find him there making things! I'm open for pretty much anything! \o/