You don't need to check her messages, then you can't really complain on her, can you? Ask her. If she says no, you have only a theory, right? No need to panic - she might tell the truth, which in that case would be good, but if not, wait. She's bound to show it sooner … Read more
I don't think there's any Shiny Stone in Emerald. There's no Blissey, if I recall correctly. Sorry.
If you've got the National Dex; all 492 pokemon.