Laura's parents are portrayed throughout the narrative as being loving, supportive, and a bit bewildered by their apparently moody daughter. Given that they are written about from Laura's perspective, it's possible to see them as being more than a little idealized. Laura tends to set them, and their goals for her, on something of a pedestal. While she strives to reach the top of that pedestal herself, she ultimately sees herself as being fundamentally unable to do so, which in turn feeds her lack of self worth which in turn feeds her self-destructiveness which in turn feeds her sense of failure and so on into the heart of a cycle of self-hate.