I don't think Corrine is going to be as much as a problem as we think. The only power she had over Gideon was the fact that he felt bad about how he wasn't honest with her. However if she was honest with herself she would have known all along that he was not "in love" with her. She set her self up this time knowing that he is involved and in love with someone else. She is trying to manipulate him by using their past together. I don't think she realizes just how important and irreplaceable Eva is to him. I think once he makes that clear she will vanish. She needs to keep her pride in check. And i don't think she is a horrible person, she just fell for the wrong guy. We have all been there. But it is time for her to get over it and move on!