When the writer became engaged to Pratt, she decided to enlist the services of a specialist in stepchild rearing.

Katherine Schwarzenegger is opening up about her journey to becoming a step-parent ― and how a step-parent coach has helped her along the way. The 35-year-old, who has three children with her husband, actor Chris Pratt, is also a step-parent to Pratt’s son, Jack. Pratt shares 12-year-old Jack with his ex-wife, Anna Faris.

During a July 15 appearance on the podcast “Parenting & You With Dr. Shefali,” Schwarzenegger revealed that she began working with a step-parenting coach when she was engaged to her now husband, Chris Pratt. Schwarzenegger noted that the coach helped when she became a stepmom to Pratt's son, Jack, now 12, whom he shares with ex-wife Anna Faris.