Long, long ago(ca mid-90's), back when I first got into reading books in digital form, I came across one that started quite promisingly. Unfortunately I was easily distracted back then, and have no recollection of name or author. But I think the opening is curious enough to have a chance at recognition.
It features a female protagonist that serves as a mage's assistant, the position of apprentice reserved for males. this annoys her. finding upon reporting to work one day that she has been reduced to transport mule for something the mage need transported, she is none too pleased when, upon mishandling a scroll or similar, she finds herself rather better built for swordplay than spellcasting. I also believe the case in this particular instance was that she somehow learned that her master was dead, leaving her with nothing to do but make the delivery. If anyone can tell me the name of the book, I'd be ridiculously grateful.