A former patient-care technician who worked at a Marana adult-care home could be placed on probation or sent to prison for up to 3 3/4 years after pleading guilty Monday to forgery.

Lisa Marie Boone-Scott, 48, was arrested in October after she was accused of stealing more than $4,000 from a 91-year-old patient.

Boone-Scott forged two of the victim's checks for a total of $1,666 and made five unauthorized ATM withdrawals for $2,500 between May and August, an investigation by the Arizona Attorney General's Office and the Pima County Sheriff's Department revealed, according to court documents.

Boone-Scott admitted her actions and was seen on surveillance tapes, court documents state.

Boone-Scott has prior convictions and has served a prison term in California for similar offenses, according to court documents. She will be sentenced April 1 by Pima County Superior Court Judge Paul Tang.

Under the terms of her plea agreement, she must pay the victim nearly $4,200 in restitution and the Health Care Fraud and Abuse Section of the AG's Office $500.