Thanks for the summary hyl, it sucks that it was not enjoyable. I suspect that Non-chan when through some phases of thinking how she feels and pondering about love. The 'betrayal' thing sounds really forced, basing on how upset you are about her story, am I right in assuming that there was not enough explanation about why she did that?
At first glance, I though Non-chan was wearing just a towel in that last pic...
Then I realized they were outside sitting on a bench and that was a one piece dress.