Hannah Jane is the "Eve" to William Neal Raven's "Adam." She's not quite as mysterious as her husband, but I don't know her exact birth date or place, nor when or where they were married. A lot of this is going to go over the same ground as William Neal.
We do know that they were married in or before 1850, per their appearance on the 1851 New Brunswick, Canada Census (which actually took place in 1850) in Douglas. Hannah Jane shows up as just "Jane" on all census records. Jane was listed as being 24 and "Native" born, which suggests she was born around 1826 in Canada. See the second dwelling in the image below:
In 1861, they were still living in Douglas, New Brunswick, and Jane had given birth to her first five children: Mary Ann, Eliza, Selena, Amanda J., and John. See lines 1160–1166 in the image below:
In 1870, the family was living in Mapleton, Maine, and Jane had given birth to her three youngest children: Charlotte, William H., and Huldah. As you can see in family #41 in the image below, we get the new detail that Jane was born in New Brunswick.
Jane's final census appearance was in 1880 when the family was living in Woodland, Maine. By this time, her daughter Eliza (Raven) Willard had passed away five years earlier and her widower, Charles Willard had married another of Jane's daughters, Amanda. Jane is on line 29 in the image below:
The scan on Jane's death record is not very clear, but it looks like she passed on 11 May 1894. She died in Woodland and the cause of death was stomach cancer. The record says that she died at age 64, so that would put her birth in 1829, which doesn't quite line up with the age we saw on her census records that consistently indicated she was born around 1826. The record also shows that her parents were Cornelius and Lottie Hanson and that she was buried in Woodland Cemetery. See for yourself:
Her Find A Grave page also shows that she's buried in Woodland Cemetery, but there's currently no photo of the headstone.