Questions & Answers about L'eredità che ha lasciato la nonna non è grande.
Why is the subject la nonna placed after the verb ha lasciato?
In Italian relative clauses, placing the subject after the verb is a common way to put the natural focus on that subject. Saying che ha lasciato la nonna instead of che la nonna ha lasciato emphasizes that it was the grandmother who left the inheritance, which sounds much more natural in Italian.
Does che act as the subject or the object of ha lasciato here?
Why is there a definite article before nonna (la nonna) if we normally drop articles for family members?
You only drop the definite article with singular family members when they are preceded by a possessive adjective, like in mia nonna (my grandmother). Because there is no possessive adjective here, you must use the article to say la nonna.