^ So addicted that you are straight making stuff up. We never saw the day Mo interfered, she stopped SJ for apparently a whole day and then we literally saw nothing else. QT is not showing any sign of anger, disappointment or frustration. She is acting like chapter 148b never happened.
First off, she wasn't stopped "for a whole day". Chinese schools get out late afternoon/early evening, so they don't have that long to hang out after school. I know the translation said "She didn't show up that evening", but that doesn't mean she never contacted her to say "go home without me, I have to take care of something today", which would be the polite response to a serious delay. In fact, the next scene in the plot we got (the sweet potato scene, which we know was the next time they saw each other because QT had SJ's coat with her) QT asked if she finished her business, implying that they had been in contact.
We still don't know how SJ let down Mo, or what Mo's reaction was, which is frustrating to me, but I'm still holding out hope that QT asks about it and we get a flashback or a recap.