But since she had already spoken, there was no turning back. Dong Xin Yan swallowed hard again, and with a trembling voice she spoke once more, "My own matters, I will handle myself."
She deliberately said 'myself' twice, slightly emphasizing her tone.
She thought, if Gu Ningyi didn't feel about her the way she suspected, he wouldn't mind what she said. On the other hand, if he did care... it would prove her suspicions.
Therefore, after saying this, she was extremely nervous, her heart hanging in the balance, involuntarily holding her breath, waiting for Gu Ningyi's reaction.
I hope you don't do this.
My own matters, I will handle myself.
These two simple sentences turned into a sharp knife that stabbed fiercely into Gu Ningyi's heart.
When he didn't care, even if Dong Xin Yan held a real knife, she couldn't hurt him in the slightest. But once he did care, even a few words could wound him all over.