I agree @RueMouffetard, Sally would have been into whatever Moth was. I suppose to be fair it's often what women do in relationships, especially young women, but Salray takes it to an obsessive level. This example with the rucksack, Salray isn't criticising Moth, she is eliciting more sympathy for herself. It's interesting that Salray has been portrayed as shy, yet she has been interviewed and displayed to the public, even gigging.
Salray wants you to see her as this shy child of nature, yet she's putting herself out there even more than is necessary (not now of course) I didn't read the books before the scandal, but I totally understand people putting how horrible she was, down to her having been hard done by and bitter that her husband was dying. Salray is probably quite happy with Dave and Julie, they are not as clever as her, so she can manipulate them, Julie though pretty doesn't seem to attract Moths attention.
I see quite a lot of similarities between Salray and myself, I must point out, only in upbringing and education (though I did finish my higher education studies, alongside being a mum) Lots of you posters are obviously more intelligent, better educated and well read than I am, but I don't have a problem with that. I think it's a different story with Salray, she might play on the being humble when it suits her, but also wants to be special. She probably couldn't socialise well with lovely Ruth Saberton, who wanted to talk books, Salray goes about her writing in a completely different way, RS I should imagine is far more knowledgeable than Sally, I don't think they would have much common ground.
That's a good point @Vroomfondleswaistcoat, about future marketing, if it happens. They might just bypass the critical readers.