Have you tried getting to know her? My sexualized alter was/is my best friend. But her purpose was to deal with all the sexual trauma from my childhood and on. Once I found out I was DID and understood my sexual mania was due to her, we worked things out. She had to learn why she was so highly sexualized and had to learn about love. When I was able to teach her this, and guide her into the present by reminding her, every time she appeared, to ground herself , and remember she was no longer in the past and no longer needed to protect me, as I teach all my alters, she stopped behaving sexually and concentrated instead on her role as my best friend. I have also given her a new purpose, as she is very nurturing. She provides nurturing to all the little alters that were so severely neglected. This helps her feel positive about herself until she is ready to tell her story. I hope this helps. I don't know what your sexualized alter is like. For me, communication with my alters is key to creating cooperation. We have an agreement not to switch without asking first and are doing well with blending which allows each alter to share the body with me (the host). Thanks for sharing. I know what a sensitive subject it is and you have a lot of courage.