I have a question about a singer in my band...?

I am the lead guitarist in my rock band. The singer if female with a great voice, but one problem. I, like the rest of my band, which includes a b guitarist, drummer, and keyboardist are into clic and blues rock. We are influenced by artists and bands such as Jimi Hendrix, Led Zepellin, Cream, Nirvana, David Bowie, Freddie King, and other people like that. However, the singer of my band is into Pop, as much as she does not want to admit it. She likes Taylor Swift, Paramore, Amy Macdonald, and other like them. We can't afford to find another singer, is there a middle ground? I tried showing her bands like L7, Stevie Nicks, Queen, and stuff like that but she seems to reject those choices. Help!!!!!!!!!!!!!