I am not 皮匠小白兔等各位大俠. But please allow me to give you some hints.
How long did the first marriage last?
How long has she been seeing you?
Since you didn't give enough facts, it's impossible to give you the answer.
Generally, it is good that if you can prove that you and your gf have been in relationship for at least six months. But also that the previous marriage lasted longer than that!
If your situation was extreme - maybe she had been seeing you even before the first marriage, it proves the first marriage was a fraud. She and her ex can go to prison if fraud is uncovered even if its old fraud.
