"Informed then all that she wouldn't be attending" not "informed them all why she hadn't attended". They ALL knew she wasn't coming to the class and they knew why. Bamber himself stated this.
Jeremy doesn't know everything that happenned, he even says his sister shot and killed herself, which can't possibly be true! Tell you what I'm going to do, I'm going to try and find all the police action reports which deal with this matter, where the police were being instructed by a senior officer to go and see this witness, or that witness, to find out what they knew about June Bamber, and whether or not they were surprised or concerned that she hadn't turned up for her usual Tuesday evening Bible class? I have seen several such police action reports which deal with this, and when I next come across them, I will post them up for clarification - I just want to add that I have been looking through the unread files again, and that I have plenty of unseen material which I am expecting to be posting up in the next few days, so everyone should try to stay tuned...