Patricia A. McKillip 
Solstice Wood [EPUB ebook] 

When bookstore owner Sylvia Lynn returns to her childhood home in upstate New York, she meets the Fiber Guild – a group of local women who meet to knit, embroider, and sew – and learns why her grandmother watches her so closely. A primitive power exists in the forest, a force the Fiber Guild seeks to bind in its stitches and weavings. And Sylvia is no stranger to the woods…