Sentencing her, District Judge David Taylor said:
Any offence of benefit fraud is never victimless. It harms every member of society who works and pays tax with the misfortune of having to claim benefit.
He told her "you have brought upon yourself" the huge amount of media publicity the case had seen both at home and abroad, including as far afield as the United States and Australia.
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Stella Manzie will take over after running the council until a permanent chief executive is found.
It comes after months of protests following United Lincolnshire Hospitals NHS Trust's (ULHT) decision to close the unit overnight.
The attacker made a swipe at her handbag, causing the victim to lose balance and fall to the floor.