Help me find a movie that I watched with my dad

I watched this movie about 3-4 years ago on an old app called movie box. it follows a school aged girl who lives with her addict mother, the girl is in choir and works to pay the bills around the house. At the young girls job she is being sexually harassed by her boss. the movie follows the girls trip to an amusement park that her mom promised over and over. at one point in the movie the girl snaps on her mother saying “you’re nothing but a speed bump”. the movie might be named octopus or have something to do with tentacles. i believe the movie is European or Australian or from new Zealand but it’s in english, and Im pretty sure it’s an indie film. Please help me as it’s been driving me insane for years and I can’t find it anywhere.