“Kamuhata hime’s themes are love, arts, relationships, devotion and romance. Her symbols are woven items. A Japanese Goddess of weaving, Kamuhata hime braids the strands of fate to help out anyone seeking solid relationships. Through Her careful, artistic eye, She binds devotion with love into a beautiful, strong tapestry between two committed people.
The Tanabata weaving festival is a traditional day for marriage in China, commemorating the time when two stellar deities meet and celebrate their love (see my entry on Chihnu), thanks to the help of celestial magpies who build a winged bridge across the Milky Way, bringing them together this one day out of the year.
Stargazing is a favorite activity that you can participate in, watching as Kamuhata hime weaves the heavens into a feast for the eyes and soul. As you gaze out into the stars, watch closely the area of the Milky Way. If you see a shooting star, make a wish for love or the improvement of a relationship and Kamuhata Hime will answer it.
If you’re thinking of deepening your commitment to someone, tonight is an excellent time to recite your promises to each other beneath the stars. As you do, braid three strands of cloth or yarn, making a vow at each juncture. Keep this as a Kamuhata hime amulet to protect the love and devotion in your relationship. Unbind this if the two of you ever part ways.”
(Patricia Telesco, “365 Goddess: a daily guide to the magic and inspiration of the goddess”.)
This was the only real article I could find on Kamuhata hime specifically. It was translated from German, so bear with it. “Kamuhata Hime is a weaver Goddess Nihigi followed, as he came from heaven to earth. Kamuhata Hime went up on the ridge of Futakami no mine of Himuka in Tsukushi. Later She moved on to Futakami Hikitsune Woka in Mino. Later, during the reign of Prince Mimaki ( Sujin Tenno ), left Her descendant and ancestor of the same Nagahatabe – Family, Tate Mino and settled in Kuji, where he built a hut and began to weave fabrics. These substances had magical powers, and made themselves into clothes that are never needed to cut or sewn. Tate substances were utsuhata (woven perfectly). In another version called Tates was kind of weave utsuhata because he is of weaving while retreating to his cabin, so that his technique could not be stolen. It is said that these substances were so hard that not even a soldier, She could cut with a sharp blade.
In various works even the Goddess Amaterasu is known as Weaver. [I think that reference is to the Goddess Wakahiru – a Japanese Goddess of weaving who is sometimes identified as Amaterasu’s younger sister, and sometimes as an aspect of Amaterasu Herself).
According to Hitachi Fudoki, Kamuhata Hime shrine is in Nagahatabe two miles east of the village Ohota worshiped in the former province of Kuji, Iwate in today Präektur in Tohoku. Every year people take silk as a gift for Kamuhata Hime.” 
Fudoki-pedia, “Kamuhata hime“.
Tara the Antisocial Social Worker. Dailykos.com, “How a Woman Becomes a Goddess: Chih Nu“.