There was an Electa Wood b. 8 Oct 1786 in VT, the daughter of Charles Lawrence Wood and Betsey Dewey. I believe this may be your Electa. Perhaps she was a maiden aunt in the 1860 census? The 1870 Vermont census has her living with Roxie Wood aged 85, but I don't have Roxie as a sibling. Perhaps Roxie's age is off? If anyone is researching the family of the above Charles Lawrence Wood and Betsey Dewey, please get in touch.