She's been single all along, and not a single boy has confessed his feelings to her.
It's not that she wants to date, but as a girl's vanity—especially since she has always been narcissistic about her beauty and charm, even crowned the campus belle of the university of science and technology—it's frustrating that no one pursues her, while even the less attractive girls mock her, making her furious.
But she thinks she's still quite popular. Often, boys she's just met will eagerly introduce themselves to her, displaying great attentiveness. Just when she's secretly delighted, thinking she's about to receive her first confession, suddenly... nothing happens!
Those attentive guys just disappear inexplicably in front of her. When they see her on campus, they even take another path to avoid her, as if she's terrifying or something.
It makes her so angry.
"Mom, why do you think no boys like me? Have I become uglier, lost my charm?"