Yay I missed them!
Anyway, I really like Hina saying, "it's not you, just a lack of publicity." Obviously it's true for the planetarium itself (since Ayumu's at a disadvantage of running it solo, so she didn't have someone out there advertising it like the other classes and clubs would), but I also read it as Hina realizing that Ayumu might internalize this as another example of people just not liking her and wanting to stop that. The last two chapters both had Ayumu expressing some level of loneliness to her, so it'd be really sweet if Hina picked up on and wants to help with that. I mean, she already told Ayumu that she's sure that there'd be plenty of other people that'd be interested in her, so it's nice to see her making good on trying to prove that.
Also the cat ears make Ayumu on that last page look really pathetic lol