Where'd you go, Bernadette

Brief: It's a 2012 comedy novel written by Maria Semple. The plot revolves around an agoraphobic architect and mother named Bernadette Fox. She goes missing prior to a family trip to the Antarctic, leaving her 15-year-old daughter Bee Branch and her husband Elgin Branch, who works for Microsoft behind.

The story is narrated by Bee Branch and told in a slew of documents (emails, memos, and transcripts).
With the occasional interlude by Bee Branch.