I honestly don't know where to begin. I believe my sister is delusional but I am not 100% or maybe I just don't want to believe she is because well she is my sister and I love her, but seeing her going down this rabbit hole is hurting me so here goes.  Every time I talk to my sister she always feels as If her opinions are right and everyone else is wrong. She thinks she is some sort of higher power. We were talking about dentists and I told her how I went to her dentist because I haven't gone to the dentist ina  very long time and she went on this crazy rant saying "I had stopped going to that dentist after I had found out she was scamming me and using my sons baby teeth" I was like what do you mean? SHe goes on to say "It should of been pulled but she filled it and it came out and after said that she needed to fill the same baby tooth. I figured out her fraud when it fell out in two pieces and his adult tooth was right under it. SHe knew but she tried to play me. Never let her do a teeth cleaning. She will intentionally ruin your teeth" I told her how this dentist did give me a deep cleaning and how my mouth looks amazing tbh. My sister continued to say how SHE dermaled off a large chunk of the dentists work and saw how she "fucked" her and continued to say she will cause damage to make money off of you to keep you coming back. And kept saying "I regret going to her. For more reason than one. You're not in their scam system fully yet and you are fresh meat on the market." (we are on public aid for reference)  Not going to lie what she is telling me is making ME paranoid. She also always tells me to delete all of the texts because she is constantly getting hacked. A part of me wants to believe her because she is my sister but she sounds overly paranoid to me. I have never really dealt with delusional people before is this one of those cases?