I agree with Smeagle in continuing to utilize treats to strengthen their training. 3 months is still pretty young (not too young to get in trouble, though!), and they'll require consistent and vigilant training for a while. Don't be shocked if they seem to regress towards the 1 year mark--that seems to be their rebellious age and they'll want to retest the boundaries that you set. Also, it seems this is a critical training period for Quinn as she is not only testing boundaries, but trying to determine her position in the pack. Good luck!