A jury found Tucson hairstylist Supranom "Addy" Klos guilty of stealing $300,000 from a 94-year-old woman with dementia.
According to the office of Attorney General Mark Brnovich, Klos spent the money on a car, dental implants and gambling over four months.
The victim was a client of Klos for more than 20 years. When her husband died in 2011, she was given power of attorney, which she exploited to steal the money.
She was convicted of one count of fraudulent schemes, three counts of theft, one count of fraudulent use of a credit card and one count of unlawful use of power of attorney.
Klos will spend at least four years in prison.