I thought Sage is very doting to the point of being obsessive? You can evidently see it in Ep5 flashback.
The reason why we perceived her as not doting is because the moment we first met her she's already suspecting and mad at Chad for cheating.
We still don't know what did Chad received in the envelope. We only know that Chad is angry with MC, but is it really because of Sage? Right now I'm inclined to believe the reason he blames MC is because Chad, for a fact, knows that MC was caught red-handed spying on him.
*Cough* Chad as the side bitch*Cough*
I think it's only an honorable mention when Tybalt asked Jill, not sure if it will have accumulated consequences later on with Jill, Like what
Leah did in AL, collect all the evidence of what you did and show it to your LI. As for Maya, most likely just a game mechanism for those who are really cash strapped?