Agree that a "missing child" story would have generated much more covering. The timing was such that there was an extremely short gap between the initial report to the police and the body being found - only two or three hours. By the time press and websites were picking up the story, she'd been found.
And as others have said, we have no idea whether the press have been asked NOT to reveal details, discuss the family, other people in the local area, whatever. It's not like a national case where they're appealing for people to watch out all over the UK for a missing child. It's a very local case which only people on Bute can help with.
I don't believe a word of the "it doesn't matter because she's Scottish" nonsense. Cases like Liam Fee were headlines news for week, as was the Mikael Kular case - moreso the Kular case as the mother (who'd killed him) had reported him missing.