I lived in Sterling for 13 years and went to Hell Hollow all the time. The website that was posted confused two very different tales, and this is the first time I've heard Maud called a witch. From what I know, she's a girl from the 19th century who has a grave marker in the woods and it's a party spot for kids. Many websites like Shadowlands and others who have copy/pasted info from Shadowlands will tell you that if you drive by her grave and say her name, she'll appear in front of your car and your car will either stall or crash.
The Norwich Bulletin ran a story about these legends either around Halloween 2002 or Halloween 2003.
The Screaming Woman is supposedly a Native American woman who was murdered by settlers back in the late 1600's early 1700's whose scream can be heard today. (And that legend haunts all of Patchaug Forest from Hell Hollow to Breakneck Hill, Rt 49, and Rt 138.
There is also the Guard at Breakneck Hill, who's apparently a Revolutionary War leftover who paces near some sharp corner on Breakneck Hill Rd.
And Gravity Hill was mentioned on the website, so I'll mention that here too. It's at the top of Main St. in Sterling, which is some 7 miles from Hell Hollow. Leave your car in neutral at the beginning of the road (facing south) and you'll feel like you're rolling uphill.