Learn Hardcore Greek: Η γιαγιά μου λέει ότι κι εκείνη νοσταλγεί την παλιά αυλή, όπου καθόταν με τον παππού μου τα καλοκαίρια. - My grandmother says that she also misses the old yard, where she used to sit with my grandfather in the summers.

Breakdown of Η γιαγιά μου λέει ότι κι εκείνη νοσταλγεί την παλιά αυλή, όπου καθόταν με τον παππού μου τα καλοκαίρια.

Why is it Η γιαγιά μου and not just γιαγιά μου?

Both are possible.

Η γιαγιά μου = my grandmother / grandma
γιαγιά μου can also mean my grandmother, especially in more informal speech

Greek often uses the definite article where English would not. So Η γιαγιά μου is completely natural and very common.

In this sentence, the article helps present the subject clearly: My grandmother says...

What exactly does μου mean in Η γιαγιά μου and τον παππού μου?

Here μου means my.

Greek usually expresses possession with a weak genitive pronoun placed after the noun:

So instead of a separate word like English my before the noun, Greek often uses μου after it.

Why is it λέει ότι? What does ότι do here?

Ότι means that and introduces a content clause, just like English:

So:

In everyday Greek, πως can often be used in a similar way:

Both are common.