CHICAGO (CBS) — A Northwest Side woman is being held on $300,000 bail after prosecutors say she robbed her own mother.

Police say 36-year-old Julie Franck wore a ski mask when she and an accomplice broke into her mother’s home in the 1700 block of North Marshfield last month.

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Police say the second suspect used a stun gun on Franck’s mother 15 times and then stole her $40,000 diamond engagement ring, credit and debit cards and $200 in cash.

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Before they fled, someone in the home pulled off Franck’s ski mask and recognized her as the victim’s daughter.

She was arrested on Friday.

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