Final answer:
Mildred reacts with quietness, irritation, excitement, and restlessness after waking up from her previous night's experience, indicating emotional distress.
Step-by-step explanation:
After waking up from her previous night's experience, Mildred reacts with quietness and irritation towards the narrator when he questions her. She also shows signs of excitement and a feverish state. Additionally, she becomes restless and easily irritated as the day goes on. These reactions indicate that Mildred is affected by the past events in the house and is experiencing emotional distress.