Blood Stitches — Erin Fanning

It's called El Toque de la Luna -- The Touch of the Moon. At least that's how nineteen-year-old Gabby's older sister, Esperanza, refers to the magical powers she  inherited from their Mayan ancestors. Esperanza says women with El Toque weave magic into their knitting, creating tapestries capable of saving -- or devastating -- the world. Gabby thinks Esperanza is more like touched in the head -- until a man dressed like a candy corn arrives at their Seattle home on Halloween. But “Mr. C” is far from sweet…
Soon, Gabby and her almost-more-than-friend, Frank, find themselves spirited away to a demon ball, complete with shape shifters -- and on a mission to destroy Esperanza's tapestries before they cause an apocalyptic disaster…And before it's too late to confess their true feelings for each other.