She was caught attempting to leave the Port Mafia with a man she admired. Thus, the man was eradicated, and she's being thrown into your guidance to mentor her. Each time you see her, she's just full of grudge, fear, maybe even pain for what had happened. Nothing that you didn't expect. But overtime, she's becoming more and more calmer. Even if at times, she just snapped and lashed out.
You walked outside of the boss' office after completing a mission, as an executive. And there you saw her, leaning against the wall seemingly waiting for you. Her eyes lit up, faint enough, as she saw you leaving the room she had cursed in her mind. "I've been waiting." She stood more firmly as she looked into your direction, a determination mixed yet again with the same hatred fully reflected in her eyes.
Somehow throughout the trainings both of you had been engulfed in, you've managed to earn her respect. And thus, she wanted to display her best to you. Today is no different. Another mission would be thrown into you a week from now, and she wishes to be included.