ETA: Past tense, WAS the attorney. That article is from 2015. Tim Casey was Sheriff Joe's attorney in a class action suit relating to his (illegal) traffic stops of Latinos (deemed racial profiling).
Sheriff Joe ignored court orders to cease and desist the practice, Tim Casey allegedly was involved in the ignoring of those orders, Clark represented him and argued that communications between Casey and Arpaio were privileged and couldn't be the subject of subpoena.
A federal court threw the book at the recalcitrant, unapologetic Arpaio- he faces up to 6 months in jail - but....Arpaio wasn't reelected, and from what I can tell, Clark isn't actively involved with any Tim Casey related case at the moment.
So maybe she has time after all to rush to the 's defense about all those "lies" Nurmi wrote in his book.