But Sheriff Peter Paterson has delayed sending Kirsty Ritchie to jail until he finds out what arrangements have been made for her two-year-old daughter.
The 28-year-old, of Galashiels, Selkirkshire, pleaded guilty to stealing the bank cards from the couple, aged 91 and 92, and withdrawing the money over a three-month period.
The fraud only came to light when the daughter and son of the couple noticed unauthorised transactions.
Ritchie also admitted pretending to amazon.co.uk that she was her 41-year-old client, to set up an account in the woman's name, and was supplied goods to the value of £4451.88.
Ritchie - who now works in a hotel - claimed an abusive former partner pressured her to order goods using the Amazon account over the two-month period and steal the money, but accepted it was her responsibility.
Defence lawyer Greg McDonnel told Selkirk Sheriff Court: "She is deeply remorseful for her behaviour. She is fully aware of the seriousness of these charges against her."
And he asked that a community-based disposal be imposed and Ritchie be able to repay back the money she stole from the elderly couple.
Sheriff Paterson said: "My inclination is to impose a custodial sentence."
But he deferred sentence for a week to find out what arrangements would be made for the child if a prison sentence was imposed.