I found the movie to be pretty interesting at times; a beautiful and bitter exploration of an uncommunicative mind. The film deals with the themes of loneliness. Muriel is a budding woman, who just wants to be connected, while also being ignorant of her mother. Laura is a middle-aged woman who wants to settle down by having children. And Muriel's mother, Martha, is an old woman re-experiencing the flames of passion with another man, while being ignored by her daughter. Basically, they all want love and sex. As Muriel is our protagonist, she travels through the city life with experiences of jealousy, envy and eventual redemption from her loneliness, through a mother's affection.
So yeah, that's what the movie is. A movie about a girl. I felt pretty chilled out, with the calm-inducing background music, as Muriel walks around the city. Falls a little bit apart during the 3rd act, but redeems itself, by the end. A good one time watch.