I love Hebikawa in concept but she's a really hard character to write right, and this author has failed in writing her right. I can see how expertly written of a character Hebikawa could be but the author failed in writing her.
If she's redeem great, if she's not that's great to.
The last panel on page 15. Those eyes are the eyes of self-loathing and extreme annoyance/disappoint at ones self. She knows she's not a good person and kind of hates herself for it. She either doesn't hate herself enough to try an change, tired of trying, or more likely doesn't believe she can...