"That's your only reaction, grandfather?" Aaron asked in disbelief. His grandfather truly has changed. The one who strongly opposed the soon-to-be relationship between his sister and Kyle has now changed.
He is letting Kyle do what he wants now.
"What kind of reaction do you expect me to show?" Marcus can't understand why his grandson is saying that to him. Whatever his granddaughter do it has nothing to do with him as long as it is making her happy. After all, Anna is the age that she can make her own decision.
"Come on now, Aaron. Just let this case be." Mary said in a calm tone. In Mary's perspective, Aaron is being too overprotective towards his sister. She really is glad that Aaron likes to take care of his sister even if he is far away, but being overprotective is a bit too much.