I have been searching online looking for the title of a movie, which I saw on TV a few times many years ago, in England. It was on channel 5 I think. It must have been about 7 years ago.

The plot goes as follows:

Two men and a woman commit a robbery. The woman is sister to one man. Both men get killed. A policeman keeps interogating the woman about the money they stole. Eventually the woman goes to the jail for 12 or 14 years.
When released, she tries to work on issues about the robbery and her brothers death. She is looking for a man, who should have been an inside man, responsible for what has happened. The policeman keeps following her.
Eventually, this inside man was revealed. I remember there was another lady in a café, restaurant that identified him. The woman leaves town after having her name cleared and is revealed to have hidden the money in a church.
Actually in a flash back scence, she was shown to have wispered it during interrogation, but eventually told nothing again, after hearing she could not avoid jail.

I don't remember at all actors, or characters names.
Anyone can help

Thanks a lot in advance.