Part of effective, healthy parenting is your ability to say "no," mean it, and stick by it. Confronting bad behavior, setting boundaries, and role modeling all require your ability to say "no."  Put your hand up in stop sign fashion and firmly tell her "no." When you get blowback, use your active listening to soothe your child's upset, but maintain the "no." Remind your child to accept your decision to avoid further consequences. This will be hard the first several times, especially if you're "the cool parent." Stick to your guns and both of you will survive. Saying "no" is a big part of healthy parenting.