Shows a pattern of ongoing instability in moods, behavior, self-image, and functioning. often result in impulsive actions and unstable relationships.
Biological factors:-
None mentioned in the movie but almost 60% of the risk of developing borderline disorder is conveyed by genetic abnormalities.
It appears that the genes that increase risk for the disorder may be passed on by people who have the disorder itself, or a related disorder, such as bipolar disorder, depression, substance use disorders, ADHD and posttraumatic stress disorder.
Behavior and Psychological factors:
Attempted suicide during her sophomore years
Self-induce hurt to fulfill what she wanted. Like hitting herself with a hammer, bleeding