I saw a movie today and did not get the name of it, maybe someone can help me?

[Michelle]

The movie I saw was of a woman that had a criminal background that she didn't tell her current husband (married for 10 years and had a son) about. Her ex husband was paroled and came back into her life after 15 years and threatened to ruin her life if she didn't help him score a 35 karat diamond that was being shown at a gallery that her present husband was the curator for. A couple also poses as FBI agents to help the ex husband in gaining the woman's trust and they trick her. She visits an old cell mate that now lives in a trailer park and gets her gun that she had left with the woman. It ends with her at the family cabin and the ex shows up and the car wouldn't start so she tells her husband and son to go and she takes care of the ex husband. She just knocked him out and then the police come. I watched it this morning (Monday Nov 15) and thought I would look at the TV listings to see what it was called but I cannot find a movie that describes the movie I watched. It might have been a last minute fill in? I really liked the actress and wanted to know what her name was. Hopefull someone can help? It was just a low budget made for tv movie, that looks like it may have been filmed in Canada but I am not sure about that. It did take place in a smaller town, I think. Thank you if anyone is able to help me.