Note Chumbaniya said activities not directed related to the course. If acting is directly related to the course, it probably did help her then. Also please note that Emma Watson is a special case. For the average joe, even doing things directly related to the course probably does not help TOO much. This depends on the college/DoS. My DoS did not care about my PS, having read it only 5 mins before the interview to use it as a talking point for the interview. This is because he had little ability to check any claim made. Note this may not be true for every college and subject.
Eitherway, Im pretty sure she didnt get in. If she did, then cant wait to see her next year.