You say your mother was Slovak, mine was Czech. She made something I never see any more, wonder if you are familiar with it.
My best description would be a sauerkraut cracker, but that's really not what it is...or is it?
I'm not even sure how to properly spell it. At home we called it (phonetically) zell-nee-yak. I have seen it called zelnak, but can't find that anywhere that makes sense.
Maybe related to zelniky? The recipe is practically the same as this one, but my mother did it different. http://recipes.wikia.com/wiki/Zelnicky
Mom insisted she had to use lard, not any other kind of shortening. She would roll them out as thin as possible with a roller, and bake until crisp. The recipe calls for straight, uniform pieces, but hers was just whatever shape they ended up with after rolling. The recipe says if they get too brown they get bitter, but mom's always had thin brown crusty edges.
This was in my childhood, say mid 50's. Years later at work I saw a Bohemian guy eating those from his lunch bag, and his looked as ragged and unkempt as my moms, so that must be how a lot of Czech mamas made them around here. After I told him my story, the nice guy gave me the rest of his bag.