Your desire for truth can also be an undiscovered spiritual gift of discernment. The traumatic experiences you have had as a child, and your sister, have left you both vulnerable to spiritual attack. Many mental illnesses are demonic oppression. Renew your mind with the Spirit is the Lord. He wants to heal you and your family. He is telling me this for you now.
Turn your eyes upon Jesus and renew your mind.
You are loved and when you decide to open this door you will be healed. Praise Him now for what He wants to do in your life. Bless you anon.