Is she working on crawling or walking or some other new skill? She may just be more interested in something else right now and doesn't want to sit still. I think she'll come around, especially if you keep reading to her and let her see you reading on your own. I remember that my daughter would not sit still very often to read a book with me until she was about a year to 18 months old. She sometimes looked at them on her own, but more often than not, they were chewed, tossed, stacked like blocks, worn as hats, used for chairs, etc. She's almost five now and LOVES books (and cringes when she sees even a tiny tear on a page, so she eventually learned to respect them!).
Have you tried lying on the floor near her and reading out loud while she's playing with a toy or something? If you make the story sound interesting enough, she may be enticed to come over to see what's going on with the book. I made so many ridiculous sounds while reading "Mr. Brown Can Moo, Can You?"; it really got her attention and she started trying to make the same sounds.
In addition to regular books and board books, we had a few really large board books (like the size of a magazine) that she could "hide" behind, and several sets of tiny (about 2" X 2") board books that could double as blocks, sorting toys, etc. She also had a plastic photo album that she could chew on. I put pictures of her cousins in it, and she loved to look at it. Maybe fill one with pics of her favorite toys, or just pics of her? There are a couple of books called "Gallop" and "Swing" that have a very cool motion thing (I don't know how to explain it -- it's called scanimation or something like that) when you turn the pages. My daughter especially liked books that had pictures of other babies in them. We even had a couple of plastic books for the bath tub.
I made sure her books were always accessible to her -- on low shelves or tables, a couple on her blanket while playing on the floor, etc. And she always had a few in the car. Some of the books didn't make it out of her infancy, but some are still on the shelf with her teeth marks around the edges. They are precious!
Keep working with her. If she's not interested in one, try another. My daughter rarely liked the books that I enjoyed reading to her, but she found a few favorites and I had to read them over and over. Some of them were very generic, and some were more “licensed” than I would have preferred, and most were just plain silly ("Elmo's ABC", "Babies Go Everywhere") but it was a book, and she was looking at it, so whatever! Good luck!