The Battle Between Spirits

If you have read my other story you will know that I can sense spirits and now I can hear them and I see dark shadows. I can also see auras and feel auras. I can sense how much energy someone has and can take that energy away from them but if I touch them I cannot take but I can give energy. I had a new experience with my sister- where good and bad spirits fort with and against me.

I was in my room with my twin sister. The hairs on my arms stuck up and my left arm started to hurt as the energy was drained from it. I told my sister that there was a bad spirit here. My sister is a psychic vampire so I said to the spirit if you take my energy my sister will take yours, the spirit kept on taking my energy so my sister took it from the spirit. My sisters started to cry and I asked her why and she said she does not know? I realized that she could feel the emotions from the spirit like I can sometimes do. The spirit stopped and I felt energy been given to me (this was a good spirit) but there were still bad spirits they took my energy away again then the good spirit gave it back then it was taken away again. My sister said she would try shield me as well (I have tried to shield myself in the past but I'm not very good at it) it worked and the spirits give me some energy back but I felt one spirit that had fed off my energy for a long time (that spirit could talk to me) but my sister took a lot of its energy and shielded me.

My sister and I are new to this and would like some advice. Should I keep in contact with the spirits or leave them and can anyone tell me how to block the bad spirits?