People are saying how the protagonist is a pedo creep, but in reality she's just been admired and doted on because of her appearance so much since she was a little girl. She thrives on the adoration and attention people give to her. When loli shows up and basically acts like she's nothing special or noticeable, it drives her crazy and weakens her self-esteem. Thus, she resolves to not let the cute loli get away from noticing her.