Louisa is a complex character who is struggling with her own personal demons. She is described as being:
* Emotionally distant from Mark and her husband, John.
* Haunted by her own troubled past and the loss of her own parents.
* Trying to find her place in the world and cope with her own sense of isolation.
Louisa's relationship with Mark is strained, and she often appears to be distant and uncaring. However, there are moments when her true love and concern for him shine through.