The tiny speck of blood could be from them eating foreign matter, like grass & other plants. Turbo ate some grass & flower the other day & I tried to get it out of his mouth but he had already swallowed. He had some blood in his stool & he's ok now, back to normal stool. If it continues & her stool gets looser, more frequent, a vet visit is in order. Hope she'll feel better soon.
Just fyi on deli fresh products, they use carrageenan in their rolls, most rolls & some canned foods has this controversial ingredient.
http://www.yorkietalk.com/forums/yor...rrageenan.html