Final answer:
Frances may be experiencing maladaptive daydreaming and exhibit traits of narcissistic personality disorder.
Step-by-step explanation:
Frances's behavior and thought patterns, such as daydreaming, engaging in fantasies, and seeking validation from others, suggest that she may be experiencing maladaptive daydreaming, which is a psychological condition characterized by excessive daydreaming that interferes with daily functioning.
In addition, her grandiose fantasies of being adored and loved by crowds of people and seeking revenge on those she perceives as mean indicate narcissistic tendencies. She may exhibit traits of narcissistic personality disorder.
To make a more accurate diagnosis, it would be recommended for Frances to consult with a mental health professional who can conduct a thorough evaluation based on the DSM-5 criteria for psychiatric disorders.