What are the motifs in Brain Trust by Christopher Golden?

Perseverance is a recurring idea. Jenna Blake is a bright young woman who is pursuing a medical degree and plans to have a career in forensics. A quality that stands out about the young woman is her tenacity in following through on bits of information or innuendo that many people would just ignore. Because of her background as a pathology assistant, Jenna recognizes that a victim of an explosion has an unusual condition, one that she couldn't begin to recognize despite her studies and her work in pathology