Shawn,
Please part of this is something I went through,and I can speak from experience,I did have something like this happen to me and after eight years I am still having to suffer the consequences of not listening to some warnings. See my sister (Whom I love dearly as I am not just her sister but also the one to take of her) after many years of running finally came back,and she told me how sorry she was and how much she loved us,she had been into witchcraft (Not sure if she still is) she came back and claimed that she had become a Christian,and she had the gift of prophecy,she was having dreams and visions about me and what I was suppose to do. I started listening to her. She was very good at it and she knew a lot of scripture. She got me to doubt some of the things the Lord told me to do. She started using that to drive a wedge between me and my mom. (She was using scripture to back up what she was saying) I was looking at her through rose colored glasses and did not catch some the things that were off just a tiny bit.
My mom got warnings about false prophets,but because my sister had forged that wedge between my mom and I,I didn't want to listen. My sister got me to move out of my folks place (I knew I was suppose to be the one to take care of them) We ended getting a place together,in that time she cleaned out my bank account through manipulation (Which when she came back had over $23,000 in it) She ran up my charge cards to the tune of $10,000 and stole over $25,000 worth of inventory from my business. The Saturday before Easter she almost had me committed to the county mental health,tried to get me to sign my car and bank accounts over to her also. Her husband the same day hit me so hard in the sternum that I nearly passed out. All day before they took me in they were brow beating me into submission. They threw me out of the place,took my car,dumped me at the county,they didn't tell anybody they did this (I was paying the rent) The county sent me to a homeless shelter,for Easter Sunday. The Lord did not leave me stranded though but He did let me suffer the consequences. (I am still paying off the credit cards)
My sister is a pathological liar. (She is so good at it she had social workers in tears because they didn't catch her at,and one nearly quit)
I just don't want to see you go through something like this. It's a very hard lesson to learn.