My kids did no after school clubs or sport, they and I didn’t need the hassle of it. A trip to the park after school on the walk home (hubby had the car so it was walking come rain or shine) and then in, out of uniform, snack and chill. Homework at the table as I cooked dinner then eat, bath, quiet play and bed. Both are now mid 20’s, university degrees, management positions, home owners and happy. Kids do not need pushing from one activity to another, they need time to develop personal interests, hobbies, to relax and to be bored!
Her poor kids don’t stand a chance.