You're splitting hairs. Lynch left the decision up to Comey and followed his recommendation. 
Comey  said this on July 5 2016:

"In our system, the prosecutors make the decisions about whether charges are appropriate based on evidence the FBI has helped collect. Although we don’t normally make public our recommendations to the prosecutors, we frequently make recommendations and engage in productive conversations with prosecutors about what resolution may be appropriate, given the evidence."

"Although there is evidence of potential violations of the statutes regarding the handling of classified information, our judgment is that no reasonable prosecutor would bring such a case."

https://www.fbi.gov/news/pressrel/press-releases/statement-by-fbi-director-james-b-comey-on-the-investigation-of-secretary-hillary-clinton2019s-use-of-a-personal-e-mail-system

You can keep believing that Lynch let Hillary off the hook. I don't care. The facts say something different.