The end seems to support that, too, as instead of worrying about their argument at the end, Pinkie jumps right in to join, gleefully shouting "argue, argue, argue, bicker, bicker, bicker!" So she recognizes it for what it is, that she knows it's a part of being family, and isn't anything serious.
“I've noticed that about your people, Doctor. You find it easier to understand the death of one than the death of a million. You speak about the objective hardness of the Vulcan heart, yet how little room there seems to be in yours.” - Spock, The Immunity Syndrome
Leonard Nimoy: 1931 - 2015