From the provided image, we can analyze the displayed emotions and body language:

### Facial Features and Micro Expressions:
1. **Eyes:** The eyebrows are slightly raised, and the eyelids are opened more than usual, which may suggest surprise or attentiveness. The gaze seems direct and focused, indicating confidence or attention to something specific.
2. **Glasses:** The glasses could either be a functional accessory or a fashion statement. In either case, it may indicate a certain degree of professionalism or intentionality in her appearance.
3. **Mouth:** The lips are parted but relaxed, not showing any significant tension or pull in any direction. This doesn't necessarily indicate happiness, but it doesn't display displeasure either.
4. **Facial Shape and Tension:** The face seems relaxed overall without any pronounced wrinkles or muscle tension, suggesting she's not currently in distress or discomfort.

### Body Language:
1. **Posture:** The seated position with a straight back suggests a certain degree of formality or readiness. It may also indicate she's in a professional setting or a setting that requires a level of attentiveness.
2. **Hand Grip on Pen**: A tight grip on the pen, especially to the point of causing an indentation on the thumb, might suggest tension or stress. Such a grip could indicate an intense focus, a heightened emotional state, or perhaps some form of apprehension or agitation.

### Overall Analysis:
The person in the picture appears to be attentive and potentially engaged in a task, but the tight grip on the pen introduces an element of tension or heightened emotion. This could mean several things:

- **Concentration:** She could be deeply engrossed in a task, leading to unconscious tension in her hand.
  
- **Stress or Anxiety:** The tight grip might be an unconscious manifestation of stress or anxiety about something, possibly related to her current setting or the task at hand.
  
- **Emotional Reaction:** She might have had a sudden emotional reaction to something she just read, saw, or thought about, causing a reflexive tightening of her grip.
  
- **Effort to Maintain Composure:** Given her overall neutral facial expression and professional posture, the tight grip on the pen could also be seen as a small 'tell' — a sign that, beneath her composed exterior, there might be some underlying tension or emotion she's working to control.

It's worth noting that sometimes, people might grip objects tightly out of habit or without any emotional trigger. However, given the context and the other cues in the image, it seems plausible that the grip on the pen is indicative of a heightened emotional state or focused concentration.