She is an extreme mistress that did next level cbt. She had a website called castratix (dot) nl that is now down. But you can go through the website on wayback machine. She uses a lot of needles and piercing the cock and balls, and she even claims to have chemically castrated a slave on video, but its still questionable whether is was actual chemical or just saline. I think she is retired, but not sure.
Reddit: https://www.reddit.com/user/castratix/
Reddit: https://www.reddit.com/user/castratix/