Police would like to talk to her about a report that money left at cash machine outside Tesco Express, in Hanging Hill Lane, #Hutton, was stolen at around 4.30pm on Friday 24 July.
Officers received reports that a man had withdrawn hundreds of pounds using two separate cards.
He walked away, leaving a three-figure sum at the machine.
We understand that a man and woman were standing behind him and ran off with the money.
Anyone with information is asked to call Essex Police on 101 quoting crime reference 42/110791/20