His purchase of Bianca was his way of healing that part of mother-son attachement kids have when a mother holds their kid for the first time. This is called Reactive Attachment disorder. He seems to be linking his life towards her, comparing her as he was. He carries his mother's blanket around with him, and used it as a tool for good. Later on in the movie, the blanket is not seen as much because it is more around Bianca then Lars. After Bianca died, the blanket is gone because he no longer needs that item to prove that his family love is still there. This forms a sense of love/belonging in Maslow's Hierarchy of Needs. Lars is stuck in his childhood which he brings Bianca into. For example, he took her to the lake where Gus and Lars used to play when they were younger. This scene proves that even though he wants Bianca to be his new start, it keeps pushing him to his childhood
His purchase of Bianca was his way of healing that part of mother-son attachement kids have when a mother holds their kid for the first time. This is called Reactive Attachment disorder. He seems to be linking his life towards her, comparing her as he was. He carries his mother's blanket around with him, and used it as a tool for good. Later on in the movie, the blanket is not seen as much because it is more around Bianca then Lars. After Bianca died, the blanket is gone because he no longer needs that item to prove that his family love is still there. This forms a sense of love/belonging in Maslow's Hierarchy of Needs. Lars is stuck in his childhood which he brings Bianca into. For example, he took her to the lake where Gus and Lars used to play when they were younger. This scene proves that even though he wants Bianca to be his new start, it keeps pushing him to his childhood