I'm not a southern Baptist, but I am a rather conservative born-again Christian who lives in the East Midlands, and a Creationist to boot (although I subscribe to microevolution, just not at the speciation level of things). I don't find most born again religious conservatives really object to their children being made aware of the current scientific paradigms, it's more the shove-it-down-your-throat, "only an idiot wouldn't accept it" disparaging attitude that tends to accompany it (I experienced this myself and continue to as my field is archaeology). It would be folly to have your children unaware of evolutionary theory, surely? I can understand her desire to have her children mix - to be honest you can teach your children what you believe to be the truth, but they'll have to stand up against peer pressure at some point anyway.
On the church issue, I agree that she'll have to visit cross-denominationally to find a home. Her own denomination would be a good place to start, but every congregation is different within that and she'll find individual churches to be more biblically conservative or liberal independent of what sign is over the door. It's often a long process but she may find the perfect place on the first try, you never know!