I found this story mind-boggling. I was amazed how easily she was duped. A cold call, claiming to be the police, asking her to do the things she was asked to do. Why didn't the alarm bells ring?
Some years ago I had my handbag stolen and half an hour later I was rung by the 'police' to say that someone had been caught trying to use my bank card. He then asked to do some security checks starting with asking me my bank account number - which he already knew because he had my cheque book. At that point I still thought the call was genuine but I refused to give him the number because, as I told him, I never gave numbers like this over the phone to anyone, not even the police.
I rang off and dialled my bank, who said no-one had been arrested in the branch, so I then rang the police station on the number in the telephone book and they confirmed that the phone call was not genuine.