Ashley Bemis, 28, is accused of posing in social media as the wife of a firefighter battling the blaze as it tore through Orange and Riverside counties in August. She asked for donations of money and items to help her husband and other firefighters on the front lines.
But officials say Bemis is not married to a firefighter and was raising the money for her own benefit.
Bemis was arrested Tuesday and booked into Orange County Jail on charges of felony grand theft, second-degree burglary, witness intimidation and making false financial statements. She is being held on $50,000 bail.