All I will say is that I have several of her pencil sketches in my house, and they are poignant, provocative, angry and fragile. To me, they are art. If you don't think they are, that's fine, but try to not let your frustration at not having a reaction make you belittle those that do.
Also, anyone who walked around and saw some of Damien Hirst's work before the Sotheby's auction a few years ago might been stunned at some of what was seen. The shark in a tank was a spectacular piece but a lot of that was in how it was staged and presented.
Art is a very personal thing. There's plenty of stuff I really don't like, but if others do, that's fine.