Janette was left there nude in the deep water and Molly and Kimberley were getting farther from her with every second. Janette knew that they were planning something, so she didn't know how she fell for it again, and there she was once again running around nude well swimming that was.
Janette knew that it was time that she gets a little payback from the two of them. Especially if she was going to be punished for losing her bikini again and they knew as soon as she thought of it. It was what they had to be whispering about the whole time and they had just made it look like they were going to do something to the mistress just to draw her in.