ECs only become very important at the most selective colleges. Many publics and some privates admit based on gpa and often SAT without considering ECs at all. At most of the remaining colleges participation in ECs (eg. member of this and that) is sufficient to check off the box. This sounds like your daughter. She may want to look at the Common Data Set section C7 to see what box they for ECs check in the non-academic factors of admission.
If she is considering the most selective colleges they look for leadership and accomplishment at a high level. As Stanford says
Students often assume our primary concern is the number of activities in which a student participates. In fact, an exceptional depth of experience in one or two activities may demonstrate your passion more than minimal participation in five or six clubs. In general, we want to understand the impact you have had at your job, in your family, in a club, in your school or in the larger community, and we want to learn of the impact that experience has had on you.