My Evil Husband is Obsessed With the Wrong Person

I've transmigrated into the body of the wife of the mad villain emperor in an angsty novel!How will I escape? By running away quietly when the saintess he'll become obsessed with appears. This love-blind emperor won't even remember that I exist once he lays eyes on the saintess! I really didn't do anything. All I did was lay as low as I could so that I wouldn't get on my crazy husband's nerves. But the villain emperor has asked me to return to the palace with him, and not the saintess. But she's already here! Why are you obessessing over me?