Police in Nottingham are appealing for help finding a 31-year-old woman from Worksop.
Vanessa Firth left her house on Netherton Road, Manton, at 6:45pm on Wednesday and has not been seen since.
Vanessa is white, of medium build, has short black hair and is around 5ft 3ins tall.
She was last seen wearing blue jeans, with black boots and a dark blue or black coat.
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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.
The assault is alleged to have taken place more than two years ago in Birmingham.