Sharp Objects and its subtext

Sharp Objects' subtext suggests that everyone needs mentors to guide them. Without mentors, people end up hard-edged and damaged. They can even, in some cases, become monstrous.

Mothers are a child's natural and first mentor but as the novel makes clear some people are terrible at mothering. 

As Camille wryly points out, "I just think some women aren't meant to be mothers. And some women aren't meant to be daughters."

According to Adora, Camille wasn't "good." What Adora means is that Camille wasn't vulnerable or weak the way Marian was. 

Marian dies when Camille is thirteen--a circumstance that further estranges her from her mother. Camille says, "Its impossible to compete with the dead." 

Camille has always felt unloved by her mother. She engages in risky behavior and becomes a cutter--perhaps purposely putting herself in danger to find maternal love. 

Like her half-sister Amma will find out, Camille's hometown is oppressive.

Camille decides to write about pain; that is, become a crime reporter.

After she leaves her hometown, she vows to never look back. She revels in the role of "cubby" or that of cub reporter. With her editor, Camille has finally found the mentor she needs.

But then Curry sends her back to her hometown to report on a story that he thinks will "make" her career.