I think it's funny that Shiho looks to be "interfering" (from Yori's point of view) with Yori and Himari's date, presumably in the next chapter too, contrary to what some readers expected, i.e. that her arc was over in the last chapter, and she would at long last (after two years) fade into the background.
That's one reason I'm more certain than ever that Shiho is not going anywhere. To be clear, ever since her crush on Aki was revealed, there was a decent chance that they would become a couple. But with Aki's speech during the festival live, and the bonfire chapter, it's clear that we're moving forward with the Shiho x Aki route. Which makes the odds of Shiho being pushed to the background really unlikely.
Shiho is the Yori to Aki's Himari, meaning Shiho and Yori are both vocalists pursuing Aki and Himari, respectively. Whispering them a love song, if you will... With that, and with their relationship having been a major driver of conflict, they might as well be the #2 ship at this point, ahead of Kaori x Mari and Hajime x Momoka (though I hope we will get to see more of those ships too).
-- Edited for clarity --