yeah I don't know what the other person is thinking, this is more likely setting up future things happening. Just because the girl realizes OH SHES HOT doesnt mean the manga is ending. If anything, considering the mangaka, it's probably to just get the relationship drama out of the way first for increasing hot under the collar stuff so they can go to the plot.
I also wouldn't take a brand new series as yuri hime just axing things left and right either. If anything, this is them flexing new financial power with how many licensed manga have been getting anime adaptations lately (and the runaway success Watanare's been for them and the publisher)