LEAD, S.D. -

A Lead woman now admits to having a sexual relationship with a 12-year-old boy.
Staci Jo Graves, 43, changed her plea to guilty Thursday morning in Lawrence County court.

She was originally charged with four counts of first degree rape and the solicitation of a minor. First degree rape carries a maximum penalty of life prison. Because she entered a guilty plea, the state reduced charges to sexual contact and solicitation of a minor.

She faces a maximum sentence of 15 years in prison when she's sentenced on Oct. 16.

Graves was arrested in late March after the victim's parents discovered lewd text messages from Graves.

In court, she blamed depression and marriage problems as well as drinking and medication issues for her crimes.