I'll hold this over you and Uncle Finn and then what'll you do?
-- Greta (Chapter 1 paragraph 8)

Importance: Greta threatens to hold mistletoe over June and her uncle in an effort to make June uncomfortable. Greta resents that June has this close and intense relationship with what she considers to be the 'good' godparent while she is stuck with dull and uninterested godparents by comparison. Her resentment reveals itself often.

He's the guy who killed Uncle Finn.
-- Greta Elbus (Chapter 6 paragraph 49)

Importance: Greta tells June this at Finn's funeral when Toby is seen standing outside of the funeral home, uninvited, shunned for the family's mistaken belief that he is the one who was responsible for giving Finn AIDS.

Now that Finn's gone, you and me....
-- Greta Elbus (Chapter 8 paragraph 22)

Importance: In this comment, Greta reveals that she has been jealous of June's relationship with Finn, and feeling left out. She believed that with Finn gone, they would go back to the way they were before...