Here is my analysis of this particular update. As per usual for this story, little progress is made at times when great progress could be made on sexual fronts. Here are some examples of where it could have gotten more sexual.
1) Shower with Ellie. They were just talking lots of sexual stuff... Daughter drops the shampoo and gets a closeup of Sophia's pussy a few inches from her face... And she doesn't go in for a quick kiss. Nothing, doesn't ask her mom to help shave her pussy or eat her cunt or anything... This could have been much more sexual, better luck next shower.
2) No Bra at school. Her nipple didn't pop out, she didn't get groped, no biggie here. I mean her nipples got hard, but so what?
3) Mr Bennet stands behind her in the break room... Don't even grind his dick on her ass, or cup her tits from behind or anything.
4) The Maid Masturbates on her bed... and is calling out Sophia's name as she masturbates... Yet Sophia just watches her, don't even go in for a taste, or to spank the maid or something. This had SERIOUS potential and was squandered.
5) Shopping with Dylan... He previously groped her ass in the beach changing room. He previously jerked off looking at her in the beach changing room. He previously kissed her after being dropped off at a soccer game. This changing room scene had no kiss, no groping, and no jerking off. Regression here... Yes, she showed her bare tits. So what though? Elie got to see her tits a whole lot more already, so did her sister Patricia. So someone seeing Sophia's tits is not a step up. Just happens to be because he is a guy, but Sam got to see her tits before too... Well almost, like half her nipples for whatever reason. Mother Son changing room seems to be a predominant theme here. Also, Sophia could have tried on some crotchless panties or something, but nope.
It's understandable that there needs to be some foreshadowing for future events... but events become foreshadowing for foreshadowing... Building up more and more but not making any significant progress. We are all like a bunch of frogs put into a pot of cold water and set on the stove with a low flame... Nobody is really gonna jump out and before we know it we will be boiled over. We are all being slowly roasted alive by this story... drawn in like moths to a flame yet slow cooking us not the quick scorching we expect.