Why do you think the other stripper (Kim) was black? I don't think any news story has said so and she doesn't sound like it on the 911 calls.
In her 911 call, she said "They called us N*****," but you could be right.
There have been news stories that have said both strippers were black (of course, they may be wrong).
We can all have our opinions on if she sounds black or not. I listened to it carefully, and Kim sounds black to me, but probably not from the South or certainly not the deep South. Maybe midwestern or California originally. Also, if you listen to the end of it, she says "thanks, baby" to the dispatcher.