Victims’ own viewpoints, desires, and opinions may fade as they are overwhelmed by the abusers’. Over time, they may lose a sense that they even have a right to their own perspectives. This is called perspecticide; the abuse-related incapacity to know what you know (Stark, 2007).
https://www.domesticshelters.org/articles/gaslighting/perspecticide-erased-by-your-partner