Answer: No
Explanation:
According to the theory of Catharsis, anger and negative feelings are eliminated which are cause due to traumatic events or situation faced by a person. Releasing of such emotions will help the person to manage their emotion and give feeling of relief.
According to mentioned situation in question, releasing her anger from punching the punching bags will not help her to reduce the aggressiveness present in her nature. She will become more aggressive instead of getting relieved from that anger according to the research and comparison with the theory.