Cancelling a photographer

Has anyone cancelled a contract with a photographer to hire someone else? My fiance and I had our engagement shoot with our current contracted photographer, however it was not a positive experience. There was absolutely no chemistry between us and her, and she seemed uninterested in us. She gave us really no direction during the shoot (we've never had photos done before), and never showed us any pictures before leaving. We now have to wait 3weeks to see anything. After looking at her portfolios online, I feel like our shoot definitely fell short. We were told it would be a 60-90minute session, and it lasted 40minutes at the most. We felt very rushed, and uncomfortable because of the lack of direction or communication. She seemed personable when we first met, but after I told her that both of us work in a correctional facility, the mood seemed to change dramatically. I know people can have strong opinions about something controversial like the field of corrections, and I truly feel like she didn't like us because of this. I don't hold anyone's opinions against them, but if that's hers then I feel like this is not a good fit. 90% of our guests will be friends from work as well. I now have a very bad feeling about this photographer, and am nervous to have her shoot our wedding (no do-overs!). I need some advice!