Mary Foley, aged 35, of Cork Simon community, pleaded guilty to carrying out the robbery on September 29 last.
Two men went into The Funky Skunk with Foley but she was the main aggressor during the crime, Garda Brian Barry said at Cork Circuit Criminal Court.
“She began shouting at the woman who was working alone in the shop. She then went behind the counter and looked around behind the counter,” said Garda Barry.
“The shop assistant retreated into the office. Mary Foley followed her in and pushed her way past her. She took her Samsung mobile phone.
“The woman tried to call 999 (from another phone) and Ms Foley stopped and grabbed the phone from her preventing her calling for assistance.
Gardaí were alerted by a passer-by. Ms Foley was trying to get the safe and till opened when the gardaí arrived.
“The victim declined to make a victim impact statement but she was fairly shook up by the incident. She left her employment in this shop and moved back to West Cork.
“Ms Foley has 238 previous convictions,” said Garda Barry. Many of those were for public order offences but she also had counts for theft and one for robbery in 2013.
Niamh Stewart, defending, said Foley was not the worst person when sober and would not be getting into trouble at all were it not for her drink and substance abuse problem.
The judge imposed a four-year jail term on Foley, with the last year suspended.
He said she would need help on her release from prison and directed that she would attend for rehabilitation on her release.