But police believe that on Tuesday, Mitchell argued with Erskine over money.
A few days later, she was found dead in her home on Latimer Street. She appeared to have been hit in the head, police say.
Now Mitchell is in a Dallas County jail faced a capital murder charge. The young man who needed money now has to come up with $1 million to make bail.
Check out the Dallas police Facebook page to read how Mitchell was brought into custody.