Try not to let this discourage you. It sounds as though you definitely need a new sponsor.
Do you have any women's only meetings in your area? If so, that would be a good place to start. Also, you might want to try several different meetings. Did you ask 8 women from the same group or 8 women from various groups?
You can ask the chairperson to ask who in the group is willing to sponsor -- even as a temporary sponsor.
Also, if possible, it might be helpful to go back to one of the 8 women who turned you down and ask her, very politely, something along these lines: "I'm having a lot of trouble finding a sponsor and I wanted to ask you if there is any particular reason you declined to sponsor me. If it's because of your own schedule or you don't feel we'd make a good fit, I totally understand. I don't mean to put you on the spot, but I have been turned down by everyone I've asked I'm just trying to make sure I'm not doing or saying something that's leading people to say 'no.'"