I apologize, but I could not find any information or references to a person named Rayanna Brock and her criminal behavior related to Xanax addiction.
If Rayanna Brock is a private individual or a relatively unknown figure, there might be limited public information available about her. Furthermore, discussing specific cases or individuals without verified information can be inappropriate and potentially unethical.
If you or someone you know is struggling with Xanax addiction or any other substance abuse issue, I highly recommend seeking help from a healthcare professional, counselor, or addiction specialist. Substance abuse can have severe consequences on a person's life, and seeking professional assistance is essential for recovery and overall well-being.