Kooh is very cute and she knows it, so she will always try to put on an act to try and be let go. Even if the captor can withstand her cuteness, there's no reason to relax as she is also very good at rope escape. A good rope tie with a tight OTN is a good way to emphasize her cuteness, so be sure to make that standard when nabbing her. Once she knows that her act won't get her free, her actual personality and feistiness will begin to emerge. As such, be prepared for some death glares, but ignore them and have fun playing with her twintails.
