Former soccer star Hope Solo has pleaded guilty to diving while impaired after being found passed out behind the wheel of her car with her young children inside. 

Solo, a former goalkeeper for the U.S. women’s national soccer team, pleaded guilty on Monday to driving while impaired four months after her arrest, according to The New York Times.

“I made a huge mistake,” she wrote on Instagram. “Easily the worst mistake of my life. I underestimated what a destructive part of my life alcohol had become.”

According to The Associated Press, Solo was arrested after a passerby noticed her passed out in her car in the parking lot of a shopping center with the engine running and her 2-year-old children in the backseat. She was also charged with resisting a public officer and child abuse, but those charges were dropped as part of her plea agreement, according to the Times. Solo received $2,500 in fines and a 30-day active prison sentence, though she also received 30 days’ credit for time she spent at a rehab facility, the AP reports.

On Instagram, Solo thanked her husband, fans, attorneys, and “all the wonderful women I met” during her time at an in-patient treatment facility, which she announced in April she would enter to “to address my challenges with alcohol.”

“I continue to be a student of the greatest school called life,” she said Monday, “and I will continue to learn and grow from these experiences.”