A Jury of her peers

"I dont know as she was-- nervous. I sew awful queer sometimes when I'm just tired" (Pg 374). 

I am guessing that the word "queer" means piece of cloth. 

Queer means strange or odd from a conventional viewpoint; unusually different 

http://dictionary.reference.com/browse/queer?s=t

This quote means that when she is tired she sews awfully different.