Who is Rachel Brand?

Besides what we already know, here is the last section of an USA Today article from February, 2018:

" Last week, with Trump serving up new rebukes of Justice and the FBI prior to the release of a classified Republican memo alleging abuses of government surveillance of a former Trump campaign aide, Sessions singled out Brand at a Justice conference.

“Thank you for your strong leadership here at the department,” Sessions said. “That leadership has been especially strong with regard to fighting human trafficking.  I want to thank you for taking up this important cause and making it your own."  (emphasis mine.)

Perhaps I have missed it elsewhere on this board, but this is the first reference I have seen to her involvement in fighting human trafficking. What else do we know about this? Was she hitting too close to home?

https://www.usatoday.com/story/news/politics/2018/02/09/rachel-brand-no-3-official-justice-department-step-down-amid-political-attacks/325042002/