This signature doesn't look like any that I can find, but she seemed to be all over the map. The picture is amazing, it's 10 x 14" or so, bigger than I can scan, so even though I think I know the answer I have to ask.......
I originally thought that, maybe less that sober if it was real, but I think it would have gone the other way, more flamboyant:-) I could only find one letter that I thought was right.
My second thought was great picture, too bad someone defaced it.