I couldn't agree more with your comments about the narration and this feel of disjoint and/or time gaps. It's like stand alone chapters, in which she's always stressed and tired, even if her day wasn't as busy.
Regarding the young boys, maybe
Mad_Koala is planning a competition between Diana and Paolo's partner (forgot her name) to turn Marco into an "alpha". It could be "alpha good" or "alpha chad".
As for Jason, I don't see him becoming an "alpha". I wouldn't make sense from what was told until now. However I didn't expect that Diana will be as free spirit with him so fast. I find that
the nipple pasties scene was a little too much at this stage.