If she is attending UofL, staying on campus should be just as safe as any other campus. To be honest, it's not unusual for there to be bad neighborhoods near any large college campuses in metro areas. College students tend to drive down property values and with low property values, you often get the non-college bad element.
Here is a crime map of Metro Louisville:
You may think by looking at it that maybe there is much heavier crime in the city, but bear in mind that as you get farther from the city that there are other police departments that don't contribute to this site.