i too saw it on dvd.  they should've named it "margot at the rachel's wedding" or "little chill." whatever it was, it was not the real thing.  i stopped giving the film my full attention after the over-thought, under-rehearsed monologue scene when kaka is unpacking in her room.  that was about five minutes into the movie.  it sort of faded into the background as i painted my nails, surfed the web, cleaned out the fridge, counted the fibers in a cotton ball...ya know.  too boring for me.