Remove the J. Green signature, and it's worth will climb a bit. I can't imagine that it's worth much as I'm sure she's signed a ton of stuff over the years.
I am not a collector--but when I was a kid my grandfather brought me along to an airport where he was picking up somebody. I had my Green Hornet comic book with me. We are walking past a cafe--and my grandfather stops and says: "See that guy sitting there, that's Ted Williams. He was eating a meal, by himself. He told me to take my comic book in there and ask him for his autograph. I screwed up enough courage to walk in the cafe, and asked a man sitting at a table for his autograph. He shook his head and said, 'not me--he's the guy behind me.' Picked the wrong guy! Went to Williams, and he graciously stopped eating long enough to sign my comic book. I put the comic book in a desk drawer in my room--and there it sat for many years. I moved away--went to UT!--and my parents moved, and the desk and my Green Hornet comic book, with Ted Williams's autograph, disappeared. C'est la vie. If I'd been vigilant enough to keep it, it would still be stashed away somewhere, just taking up space, though I suppose one can pull things out occasionally to show people. Bit of a weird business.