@snood,
I believed her without any doubt. It didn't cross my mind that she could be mythomaniac or something... It's only now that I wonder if maybe I was fooled. But I don't think so.
It was at a midtown restaurant at lunchtime. She was alone and so was I, sitting next to her. We started chatting. Almost immediately she told me she was Malcolm's daughter. I had seen Spike Lee's movie a few years before and was (still am) a big fan of the guy, so I was quite impressed... We spoke of her childhood, how she was born after his death if memory serves, and how it was to be raised in semi-celebrity... She spoke of her mother, Betty, as a tough woman. She was a very nice person but we didn't keep in touch. I'm not good at maintaining contact with people.