Earlier quoted context omitted.
In pretty much any writing medium (novels, screenplays, short stories, etc), standard advice involves hooking the reader within the first paragraph or so. This is partly why "in medias res" tends to be such a popular opening technique - it drops the reader straight into the action, which is theoretically more interesting than "She woke up, got dressed, and went downstairs for her daily breakfast of toast and juice...…
An interesting example, one of the best-known book openings in French literature ("Aujourd'hui, maman est morte."), and the difficulties translating the sentence in English: https://www.newyorker.com/books/page-turner/lost-in-translat...
OTOH I think it's often appropriate to keep "mamma" in Italian movies and texts because it carries a huge amount of connotations, which "maman" doesn't.