Let's be honest, Ha-yun is a clingy brad that always seeks attention and love, but she does it because she likes Na-ra, and she made that clear to Na-ra. They're not dating but it's clear that Na-ra likes Ha-yun, She is comfortable with Ha-yun kissing her but she is not comfortable with Ha-yun trying to go all the way. Why? Well, because she doesn't understands it, it's weird and unknown, even though she likes Ha-yun she doesn't know how it would work between two women.
This kind of thing happens all the time, we might like something, but were not comfortable with everything that's related to that thing, we might be afraid of how it will be once we know more about it.
Ha-yun didn't do anything wrong, she was lead to believe that since Na-ra doesn't mind her kisses, or even likes them, maybe something more would make Na-ra happier.
Ha-yun even said what she intended to do, but when she tried to advance and Na-ra wasn't comfortable with it she stopped, Why? because her only intent was to make Na-ra feel better, she is constantly worried about Na-ra, and she knows how it feels to be overwhelmed with stuff since she stated that she was like that in her school years.
It's not rape, no one is forcing anybody, this is just an awkward situation between two girls that like each other and are trying to deal with their feelings.
And thank you so much for the chapter, I can't stress enough how happy I am reading this <3<3<3<3<3<3<3<3