I've been using LaTeX for a few years now and I feel more or less comfortable with typing up my mathematical documents with it.
However, I still wonder if LaTeX is also used for non-scientific publications, say in literature books that contain almost no formulas.
My question is not quite about whether TeX can handle those situations, but rather whether TeX should (or is still recommended to) be used in those contexts. On a different but related note, what softwares do big publishers (such as Oxford, Cambridge, etc) normally use for typesetting their books?
To clarify my questions, let me provide some context. Recently I learned that a linguist friend of mine has decided to publish her own book and is looking for a "modern" software for her beloved piece of work. I was hesitant to recommend LaTeX to her immediately, because I wasn't sure whether it would be the right choice for her. I would appreciate it if experienced users could share their thoughts on this.