Sometimes it's best not to think about or examine a film too closely - or at all. Banish all thoughts of spoilt child, age difference, all a girl needs is romance and marriage, endless cliché and so on.
Become an empty-headed female for the film’s duration and simply enjoy it for the pretty face and clothes, the older female co-star who inexplicably isn’t in anything else and notice how dirty and covered in pollution the Parisian buildings were in 1950s.