I found the attached article on coping and depression for postpartum women. Hope this help

Hi Kimberley, 

Are you planning to assess coping without assessing appraisal? I think you may lose information if you do that. If you examine Lazaraus' model cognitive-phenomenological model, you will see that coping's relationship to depression depends on one's appraisal (e.g. whether the stressor can be controlled, accepted, threat level, etc.). We did a paper in Journal of Personality and Social Psych on this topic.

Good luck

Dear, you can see ( Cheng and Li,2008)