Greer was arrested hours after the incident and was released on bond Friday on a charge of second-degree battery.
Roxanne Woodworth says her son was left with a broken collar bone, concussion and gash in his neck that required 18 stitches.
Greer was accused of charging between $500 and $2,500 on Woodworth's credit card in 2009. She pleaded no contest to a theft charge in that case.