Seriously. Seems to me that this is basically just them trying to charge her with a crime because some feelings got hurt. The picture with the sex toy is stupid, but there's nothing illegal about that.
I don't understand the charges at all, but then again, I'm no expert on British law. Seems to me that they had had registered guides, and this was all on the up and up from what I've read. Just a bunch of girls acting out because one of them was getting married. There's basically no difference between this and every bachelorette party to ever go to Vegas with their penis hats and straws.
And the obligatory not guilty.