Police said Bobbi Ann Christoffersen, 43, worked through a local agency to provide in-home care for resident of rural Scott County, Iowa.
On November 18, 2011, the resident reported checks from his account were missing and discovered to have been forged.
Christoffersen is accused of stealing checks from the victim and using the checks to buy groceries, pay rent and utilities and to get cash.
Christoffersen was already on probation for an unrelated forgery conviction.
Iowa Department of Corrections records show she was convicted in November 2009 of felony forgery in Scott County, Iowa. At that time, she used her married name, Bobbi Ann Richardson.
She was scheduled to be on probation for that conviction until November 2012.
Jail records show Christoffersen was booked into the Scott County Jail Monday afternoon, December 19, 2011. She was charged with three counts of forgery and one count of theft. All of the charges are felonies.
Christoffersen was held in lieu of $5,000 cash-only bond.