Just because they decided to have a wedding like the muslims doesn't make her a muslim...obviously living in Pakistan etc people adopt the culture but i guess she still follows her religion; even some other model whose last name is malik had a muslim like mehndi/mayoun and shaadi but the vows were also exchanged like in Christian weddings.
Yes you are right. we have to conform whethe she is muslim or not. Her husband is muslim or not???????