From 1996 to 1998, Treyce d’Gabriel worked in private corrections as a correctional officer for Correctional Corporations of American.  For a short time thereafter, she also worked as a juvenile corrections counselor. Treyce d'Gabriel has over 30 combined personal & professional years of international experience in Handwriting Analysis and is the creator of the Handwriting Formation Therapy program. Her handwriting analysis training began when she was 10 years old. A close friend of her father, Charles Stahl, was the founder of the San Francisco School of Handwriting Studies. When Treyce showed an interest in the field, “Uncle Charlie” began to show her the ropes.

She ‘played’ with her new skills with family members. By the age of 13 she knew she wanted to be a Forensic Psychologist and realized that handwriting analysis would be a strong ally to the psychology field. Upon graduating high school she closely tutored with Charles until he certified her. Charles also certified Treyce in Dream & Art Analysis and she has since created Aversion Dream Analysis and the Aversion Art Analysis programs (see links at left). Shortly afterward Charles was diagnosed with cancer and passed away; the school closed due to lack of funding and anyone’s ability to run the school.

Since 1987 Treyce has worked diligently on teaching and helping others with the works of “Uncle Charlie”. Through the years she has been featured on many radio and television talk shows as well as in the written media. She is an internationally recognized trainer for agencies such as the Regional Organized Crime Information Center, International Association of Law Enforcement Intelligence Analysts (U.S. & Mexico), various regional & national Departments of Correction and correctional associations, Wisconsin Association of Public Assistance Fraud, various regional & national probation / parole agencies, U.S. Deputy Warden's Association, Great Lakes Gang Investigators Association and more.

She is the published author of various freelance articles as seen in PI Magazine, Somos Primos, Staying Healthy, College Bound, and many more. She is the author of Written Violence - the Personality Behind the Pen, Answers! and other industry-specific manuals such as the Law Enforcement Analyst (series) and Handbook of Forgery. Some of her former experience includes working as a correctional officer, academy instructor, field training officer, private investigator, fugitive recovery officer and a field supervisor for a national investigative agency - she has used this skill in each position.