how can Maslow's Hierarchy of needsbe utilized for this case study?

Hallie is an eleven year old white female in the 5th grade. She typically arrives at school very early and stays very late, spending the extra time studying for her classes. Her mood has changed substantially at school recently, going from appearing happy and enthusiastic, to appearing depressed, tired, and uninterested. Hallie is displaying a noticeable weight loss causing teachers to be concerned. When a teacher asked Hallie how things were going she began to cry and said that her mother was drinking and staying away from home a lot. Hallie visits her dad every other weekend. He has recently become engaged to be married to a woman and they are expecting a baby.