The premise an homage to the 1962 Agnes Varda filmCleo From 5 to 7 works in spurts.
But for most of the film, Parkers Vivienne is bland and forgettable.
As does a scene in which Vivienne, speaking French, argues with her mother (Jacqueline Bisset).

Credit: Paul Schiraldi
Yes, yes, she didnt have time for childcare because shes been touring.
Its something known rather than something felt, a fill-in-the-blank character development.
Maybe her detachment was a choice, to critique or pay tribute to Left Bank filmmaking.
Or maybe director Fabien Constant confused melodrama for flatness.