My question involves an injury that occurred in the state of: Indiana

It was found out by someone I know that her sister (a popular radio personality and occasional adult model) took it upon herself to rail on her live on the radio today. She was told this by a friend who got tired of hearing this happen as it apparently has happened several times before. My friend was unaware that this happened now and in the past and is extremely upset about this and doesn't know what to do. There is no way to know exactly what was said until the radio broadcast is archived online but it was told to my friend that she was called "certifiably insane" "white trash" and "an embarrassment to her family" among other things; this went on for several minutes live on the radio. I realize slander/defamation cases are difficult but this seems to be something that could be quite easily defined as such. I'm sorry I don't know more but I'm going off second hand stuff right now.