Unless your daughter is going to be living in a Fema trailer or an abandoned house that had been submerged, she'll be fine. I've lived in New Orleans since 1992 and can tell you those things aren't an issue. I almost thought this was a joke post at first, then I realized how paranoid the national media has made people about New Orleans.
Since Katrina the city has hosted an NBA Allstar Game, a College football (BCS) National Championship, 3 Sugar Bowls, an American Heart Association Conference, etc. The list goes on and on. Attendance at the annual events like Mardi Gras, Jazz Fest, and Essence Fest has been higher than ever before. None of that would have been hosted here had those been problems. Rest easy. Tulane is a great school in a great town.