FirstLoveMovies

https://www.imdb.com/title/tt16291098/?ref_=adv_li_tt

Mom has two daughters. Léna is in her twenties, but their relationship is strained since something tragic happened a few years ago. And Chloe, eight years old, the biological daughter of a junkie neighbor she looks after as if she were her own child. Mom has always tried to avoid any encounter between her daughters. But, when the two meet for her birthday, masks come off.