Depending on what precedes the exclamation, it could represent a change in pitch, tone and volume (if you're surprised, you're more likely to be louder with a higher pitch).
Answer:
Listener: <em><u>Father</u></em>
Speaker: <em><u>Elsa</u></em>
Because when <em><u>Elsa</u></em><em><u> </u></em>said "<em>I'm</em><em> </em><em>scared,</em><em> it's</em><em> </em><em>getting</em><em> </em><em>stronger</em>" Her Father was the <em>Listener</em> while the <em>Speaker</em> is Elsa
hope this helps!
