Answer:
Jane is showing symptoms of post-traumatic stress disorder.
Explanation:
Post trauma stress is a psychological disorder that affects people who have a lot of difficulty in overcoming a traumatizing experience they went through. These people feel very bad when they visualize any element that reminds them of the experience, in addition to having memory flashes that bring back all the feeling the experience provided.
As we can see, Jane is having a hard time overcoming the car accident she suffered along with her mother. This difficulty is harming Jane's life to the point of not even letting her sleep. This is a strong sign of post-traumatic stress.