Hello. You did not present the letters that Sanjay and Lisa sent to each other, which makes it impossible for this question to be answered accurately. However, I will try to help you in the best possible way.
Personality traits are characteristic of a person's personal behavior. Currently, it is believed that there are five dominant personality traits, which are extraversion (present in communicative, outgoing and friendly people), pleasantness (present in caring, friendly and empathetic people), conscientiousness (present in organized, persistent, controlling people) and neuroticism (present in people who tend to be pessimistic, concerned and have negative thoughts).
So, to answer your question, you should read the letters from the two girls and assess which of these characteristics the two have.