Not sure where you are getting your information from, but the daughter was born a year before they married, and the former Mrs. Renner was the one who filed for divorce. Sounds like a textbook marriage scam to me: Get pregnant, appeal to the man's sense of decency to wed you, divorce him, try to take as much of his money as possible.
Obviously, you have followed this more closely than I have.
As I understand it, Renner and the ex-wife became a couple more than 4 years ago, when he was filming Mission Impossible.
As I understand it, they broke up when she was pregnant, then reconciled, she signed a zero dollar pre-nup, and they got married.
Since he's 20 years older than she is, and since he's worked in the movie business for 20 years, I'm a little skeptical that he's the “victim” in this relationship gone bad.
But if you say so, well, OK.