I also didn't give due credit to the developments with the coworkers. For what I didn't like in the most recent chapter, I do like that the mangaka gave them some depth as humans. They're not completely oblivious or mean or anything.
The problem seems to be that, being completely in the dark about her actual issues, they simply took Hina's facade at a face value and acted accordingly in good faith. (They may well have picked up on those morose faces she sometimes makes when she thinks they aren't looking, mind.) It's telling they seem to have axed their matchmaking efforts after she stood up for Sakagami and de facto scuttled the painfully obvious Coworker Conspiracy to pair them up, presumably having correctly read between the lines of her little speech.
Ayano, clearly the primus motor of their Let's Find A Match For Hina projects, in particular seems to have been genuinely hurt and saddened to learn that she hadn't until then even told them their efforts were misplaced and implicitly unwanted. Those are some rather kicked puppy faces she makes when confronting her about it, with a fairly strong undertone of "do you have so little faith in us, I thought we were friends :c"...
Poor girl would probably be devastated if she ever learned the degree to which Hina's been lunching with them out of misplaced obligation and morbid fear of rejection. : /