BRISTOW, Oklahoma - A woman set to stand trial in a 1992 triple murder in Creek County accepted a plea deal on Tuesday.

Beverly Noe, 67, pleaded no contest to three counts of accessory to first-degree murder.

Noe was charged with killing Wendy Camp, 23, her daughter Cynthia Britto, 6, and Lisa Kregear, 22. The three disappeared in 1992 but their bodies weren't found until 2013.

Noe was supposed stand trial in February, but accepted a plea deal instead.

"The whole thing is just so sickening to me and I'm to the point where I'm like 21 years is enough to deal with this, I was ready to put it behind me and just move on and just hand it on to God," Camp's sister, Aisha Hashmi, told News On 6 on Monday.

The case broke in April 2013 when Noe's brother, Grover Prewitt, led investigators to the bodies buried on property he used to own in Pawnee County. Investigators believe the three were actually murdered in a Creek County.

Noe, Camp's ex-mother-in-law, was arrested and charged with three counts of murder last March.

At the time of the deaths, Camp was in a bitter custody battle with her ex-in laws, who were raising her then-toddler son, Jonathan.

Noe denied being involved in the murders in an interview with News On 6 last year.

After accepting her plea, the judge sentenced her to 15 years in prison and 15 years of probation.