Answer:
Mania
Step-by-step explanation:
Mania is a mood or emotional disorder that is characterized by abnormal elevation of energy level, mood and also distortion of sense of judgement.
This extended state of intense and wild elation usually last over a period of one week to be referred to as mania. Individuals experiencing mania usually tend engage in increased goal- driven activities compared to general activities.
The extremely high mood or energy displayed a manic individual could include inappropriate euphoria, elevated sexual urges, inappropriate social behavior, increased spending etc.
Therefore, Sienna was most likely experiencing mania.