In this scene she is recalling the memory of when she first met the love of her life. She described him as someone who didn't let little things get in the way of his happiness. The author uses this scene to advance the plot in beginning because it's when they first met as well as the beginning of her journey.
He starts leaving during the day
Just going hunting love
Since their first encounter they hung out more and more. Even the pack saw him as a leader when they did there howl nights. This just helps advance the plot of how he is an amazing guy and they don't see anything wrong with him he is just born with great morals to his life.
Daughter is full of fear
In this scene the sisters have their first problem involving this man. The sister mentions to her that if this guy is going to be around so much then she is going to move out. This advances the plot more by showing us the first dilemma that this man creates between the family.
War on the love of her life
From this paragraph and onward , we the readers start to see the mystery in this story build up as the wife goes through these events. She starts to realize that time is no longer the same something is happening within her family and she still doesn't know what. But she chooses to ignore it for now because she trust her husband who she loves so much.
Where are you going??
In this paragraph is where surprise starts to build up because the reaction of her youngest baby leaves the wife in confusion. We as the readers are starting to connect the events and the reaction of the child to see why it is she is so scared of her father now. WE question if he did something to her or maybe she saw something that would terrify the other in the pack just as much as her. As well as why the mother chooses to stand up for her husband knowing she also suspects something is wrong.
In this ending the tension builds up between the man and the wife because she sees that her love has turned into something that all of her kind hate because of the danger the mankind brings to her loved ones. But we has the readers feel tension because we don't know if she will protect him from the others once they find out or if she will destroy him to protect her kids.