A San Diego woman was convicted Wednesday of raping a younger woman with a golf club.

Catherine McCoy, 49, had been convicted in November of kidnapping, assaulting and threatening a woman who prosecutors said had slept with McCoy's ex-boyfriend, 10 News reported. However, jurors in the November trial could not reach a verdict on a charge of forcible sexual penetration.

Prosecutors said that McCoy, along with her friend Christopher Carerra, showed up at the 21-year-old victim's home in August 2011 and forced her into the back of an SUV. While Carrera drove, McCoy beat the woman -- identified only as "Amber" -- forced her to get naked and then shoved a wooden golf putter into her vagina multiple times.

McCoy told Amber, "You [expletive] my man. I'm going to [expletive] you now."

After the golf club assault, McCoy pushed Amber out of the vehicle, leaving her naked on a highway. She was later rescued by passing motorists, NBC San-Diego reported.

In the October trial, Amber testified she had recently purchased heroin and had been using drugs the night of the incident. She also stated that McCoy's ex-boyfriend had paid her for sex, according to 10 News.

McCoy's defense lawyer, George Modlin, argued that Amber's account of the night was unreliable because she was a drug addict who accepted pay for sex, U-T San Diego reported. He admitted that his client had beaten Amber, but said there was no evidence of rape.

McCoy will be sentenced on March 22.She faces a maximum of 33 years in prison, according to U-T San Diego.

Carrera pleaded guilty in August 2012 to rape, assault, kidnapping and making criminal threats, as well as assault charges in an unrelated incident. He was sentenced to nearly 17 years in prison.

Earlier:

View more videos at: http://nbcsandiego.com.