Stop in for a cup of coffee

Tried both of those. Even tried putting soap, vinegar etc in her mouth when she does it, its normally to kids her age or younger. She won't do it if there's older kids around
Well the plus side, that phase usually only seems to last a short time. Only other thing I can suggest is that she gets her favorite thing taken away, if it happens again, her next favorite thing, etc... Of course explaining why you are taking away her stuff away, but dont only do it when she is bad. Talk to her at just a regular time about what is right and wrong.