Jeune Femme (2017) on Netflix

Plot summary

After years spent in Mexico, Paula is back in Paris and finds that Joachim, her boyfriend, has locked her out of the apartment they shared. After screaming at his door she is taken to a mental ward, and when she gets out she finds he has put her cat outside as well. She has no job, little money and few friends. Her mother turns her away. On the subway a woman named Yuki mistakes her for a former classmate, and Paula plays along so that Yuki will buy her groceries. She also lands a live-in nanny job looking after a girl called Lila, though she has no training for it, and takes a second job at a lingerie shop in a mall, where Osman, a security guard, warns her that the women who work there do not last.