I need to go away before my kids get screwed up so much it can’t be fixed

I’m going through a faze right now where my youngest sees my illness and has now decided that she has multiple personality disorder. She acts like these other entity’s are in control of her and of course they are all mischievous or not good personalities and they don’t listen to me either. She’s mimicking my disorder so she has an excuse to misbehave but she has convinced herself that it’s real even though it is very obviously all an act. I’m afraid that I’m a bad influence on her behavior and that if she believes wholeheartedly that she really has multiple personality disorder then she will not allow anyone else’s opinion be it professional or not to convince her that she is ok. All of this is my fault. If she wasn’t exposed to my illness she would not be acting like this. I don’t know what to do except get out of her life so she stops imitating me and maybe she will get better without me around influencing her actions. I’m so lost and so sad that this is what I have done to her just by being sick.