Answer: deindividuation.
Deindividuation is a term used in social psychology that is generally thought of the loss of a person's self awareness when in a group of people. This is what happen to June when she was <span>not behaving like her normal self and was swept by the behavior of the group.</span>
The reason in which instability in emotions occurs and
interpersonal relationships seen in people with borderline personality disorder
is because of splitting. Splitting in psychology is being defined as having an
individual of failing when thinking of bringing together the idea of qualities
that are positive and negative in one’s self and towards others in which should
be in a realistic whole.