Rutherford, who plays New York parent Lily van der Woodsen in US teen drama Gossip Girl, announced her separation from Daniel Giersch in January.
The star was three months pregnant with her second child when she filed for divorce. She described him as "litigious" and said that she was "kind of scared to leave" before planning an "escape" with a friend.
Rutherford told Life and Style magazine: "I found out I was pregnant and I thought... maybe it will be calm, but it wasn't. Things only got more intense. It was very angry behaviour."
Speaking about businessman Giersch, she said: "He says he's an entrepreneur, but I think he just sues people."
Rutherford gave birth to their daughter Helena Grace in June. She added: "The most important thing is that the children have love and stability in their lives, whether that comes from a mother or a father."