A. Yin, as your dad says, you really need to grow up. From the beginning of your story, we can already tell you r a very soft, nice girl, however too innocent. When you see big troubles coming, you don't know how to handle it yourself. We know you are trying to be nice to your 99, but you also know she is more than capable to harm your BB and yourself yet you dare not saying no to her. My dear, hope you grow up faster and stay strong after this incident!
I m not telling you to learn to be a bitch, but you need to know there are evil people living around you. Sometimes bitching around can really help us to get what we want, most of all, avoiding the things that we don't want. It is just a way to protect ourselves. You just need to know how to bitch, it is not like u need to use this "skill" everyday, nevertheless not to harm people. But this "skill" will help you in the the future...as u already know..."she will be back"!!!