The Edge of Seventeen (2016) gives us Hailee Steinfeld’s Nadine, who is already struggling with grief after her father’s death. Enter her mother’s new boyfriend, who moves in and accidentally breaks her father’s heirloom. The film brilliantly captures how a small, well-intentioned act can feel like a nuclear explosion when the stepparent hasn't yet earned trust.
: Seth's character stays with his stepmother while his father is hospitalized; she is portrayed as seeking sexual relief from him. That Time I Got My Stepmom Pregnant -Devil-s Fi...