Its funny the first week she was kinder not exactly gushing with empathy , but after that and under other forces influence (dad/friends) her anger / resentment and real cold detachment began . I always got the feeling with her she was a bit of an empty vessel when it came down to how she should act or feel or cope in stressful situations and would act how the person/influence was proscribing .
Act under stress? Try react. In the last 3 years she would go ballistic over everything. Before that she would obsess over the matter. I think I posted somewhere that I handle stress well, she was/probably still is crazy. You don't want to be near her on a sinking ship... .