Hey there was a movie, in the last two years, and it was a woman looking back on the sexual relationship with her track coach's husband she had in high school, and part of it was the flashback scenes had one actress and then in the modern day timeline the character's mother was like "oh no that was several years later" and from then on the "then" one was played by an actress distinctly younger, and there were bits with "then" screaming at "now" about how repugnant she was for growing up to be one of THEM who wanted to control her, and can anyone remind me what this movie is?

Yeah, that's it, Laura Dern was Now and I am old enough I underestimate how long ago things were.