No MB, it's not Sea view Terrace. In looking up Thornfield Hall, the house is in Thompson Ct. What got the story going was a mention in the Thompson Historical Society newsletter back in 2003 that the house was used in Dark Shadows. A follow up article in the 2012 newsletter because of the Depp movie mentions it again but says research was done and it was unlikely that it was the correct house. (No kidding.) You can look up Thompson Historical Society and find the link to the Dark Shadows mention and the source for the urban legend. But a nice story about the woman nonetheless.