"can IPC is their law which could help me in a very little way without court and police"
there is no such IPC
If your are disturbed by anyone affecting the purpose of your visit to gym, then first inform the owner of the gym, (first orally, then in writing).
If that doesn't help change your place of gym (as you do not want to involve either police or court).
Ensure that you do not give your phone number to that person, and incase she gets hold of your phone number you may block her calls or change your phone number.