I'm just curious as to what her goal is. If she understands that he might come to hate her, then why is she doing all this stuff that makes him want to shut her out of his life?
If I overanalysed this far more seriously than a romcom should ever be analysed, I'd say she's suffering from low self-esteem due to not being employed. Watching Kento study hard every day makes her feel miserable because deep down she knows she should also be doing something constructive with her life. But for one reason or another, she can't, and she instead keeps bothering Kento, taking her own frustation out on him, as if that would make her feel better. Every time she manages to fool him, she feels like she's still keeping up with him, even though it's utterly meaningless and false.
But since this is just a romcom, this is definitely not correct.