So i'm a sales trainer at work, I presell portrait packages for Olan Mills Portrait Studio. I've been working here a few months and the drama is with a black female whose been working here for a week.
She and I both started talking to a customer and tried getting her signed up, she left uninterested. This woman at work (fellow employee)started yelling at me, in the middle of the mall, saying "that was my sale, the people you bring over is your sale and the people I bring over is my sale, that's how it should be". I said that had happened vice versa a few times and she said, yelling, "I have never done that, it's not in my character, and I pride myself with it" blablabla. Still yelling, bringing a commotion and scene to the table with other employees and customers. I was the bigger person and apologized because I knew I had to work with her later on. At the end of the day, I spoke to a man about the package, and she jumped in and got him signed up and SHE GOT THE SALE. I spoke to my District Manager and she said to deal with the situation and have a group meeting, which I did. But I was completely taken off guard and embarassed because of the B!tch yelling at me, and she's of lower status. What should I do?
Lower status as in job, not because she's black.

Your the trainer and you're asking us? You're doing your job so good, shes' beating you at your own game. Let her have way for a few months, then recommend that she apply for a management position at another retail operation.
Peter Principle applies here!