I am using Gionee P7 mobile phone which is Android. I am not on good terms with my sister. I notice that she is aware of everything that is going on in my office without being there or contacting anyone. Like for example if someone is teasing me with a guys name she knows about it in fact in one such case she knows where the guy stays even though I have not informed her about it or anyone in my family. She seems to know each and every conversation and also exactly where I am. I am going crazy because she is not stopping her habits and tracking each and every move of mine and creating problems. Please help.