So far — in a good way — this is not coming across as YA.  Possibly because Lexi is turning 25, has college degree, a not- new job, and a roommate-less apartment.

Reading for a booklikes book club -- YA Book Club. 

I can relate to the "shoulder surfing" comment.  It's always irritating when uninvited, but at least she's civil service at a time where government offices are non-smoking (*bad flashbacks* to tiny offices and cubicles with already poor ventilation where the shoulder surfers chain-smoked and often made snickering comments about needing a brain straw to get in my head ...)

Starting this mystery for a booklikes book club -- YA Book Club. Feel free to join us.

Completely unfamiliar with book and author.  Kinda sounds like YA meets chick flick meets mystery meets Gallagher Girls meets Get Smart.  First in the Lexi Carmichael series.