I've taken her on ke f, qf c and no issues w the middle seats

Per their website

Families traveling with childrenIf you are traveling as a family with a child (14 years old or younger), we will reserve your seats, free of charge, 2 days before your flight. We will do everything we can to make sure you can travel together and sit next to each other. To make this possible, all of your family members must be included in the same