Misty Johnson, 34, was arrested and charged with aggravated assault and battery, a felony, and misdemeanor domestic battery. Her husband, Shawn Fay Johnson, 34, was treated at a hospital for a wound to the chest, police said.
Misty Johnson made an initial court appearance Thursday in which she requested a court-appointed attorney, authorities said. She was released after posting bail, which was set at $7,500.
There was no telephone listing for her in Rock Springs.
Authorities said Shawn Johnson called 911 just before 1 a.m. Wednesday to report that his wife had stabbed him. He told police that his wife started arguing with him over his opening a Christmas present, according to court records.
As the argument escalated, Misty Johnson accused her husband of having an affair, authorities said. Police found a marriage license in the couple's apartment stating they were married in late September.
Police Detective David Thompson said he didn't know what the present was, or if it was intended for the husband.
