hi, my sister and i both have very new babies, which we both love sooo much! recently my sister has been acting out, and my family is very concerned about her. she is not the kind of person who is easy to talk to, especially in this situation. she and her husband have been together since they were in high school. this is their first baby, she is 31. as of late, she always wants to go out on the town, she's never been a drinker, but now it seems like that's all she wants to do! she can't stand to be around her husband, even though he is trying desperately to get through to her. she's not a bad mom, and she loves her son very much. my concern is all of the new negativity toward her husband, and constant need to act like a kid again. we are wondering if you all have any advice on how to approach the impending confrontation with her. something needs to be done before she ruins her marriage. she's always been an edgy kind of person, but now we can't even talk to her about any personal issues without her snapping. is this ppd? how do we talk to her? is there anything more subtle we can do to help her?