C.W.
A.,
I am sure this is difficult for you. I cannot say that I understand, but I wanted to give you some encouragement. AS a counselor, we see parenting and marital discord a lot in this way, these are some things I suggest and practice myself. This is formative time in her life (as you already know). Your(meaning you and your husband's) parenting style now will be it for your own children. I would suggest you have a "Family meeting" first with your husband (which we do monthly to go over goals, communication, and update each other on our growth and needs for each other) to talk about your feelings, or if you have already communicated this, then what you can agree on as a team that will work for you both. You may have to compromise on a few small things, but stick to your guns on the things that are worth the battle. Listen to his reasoning as to what he feels differently about and then form a plan for what you will both go for, what you won't, and what talks may need to come from him (boys and grades) and what things will come from you (chores, social skills, etc.) . I find that whatever he tends to give too much on- give to him- then he has to deal with what happens when things go to far (i.e. when he lets her backtalk him, he also disciplines your children in that category when they do the same). Sooner or later he will realize something is not working and may have to adjust fire. Don't be afraid to give certain issues over to him and let him try it. We as moms tend to try to be super heroes and take on it all- if we are cleaning up then they never have to. This could be simply commuicated in your meeting like "honey, this is so hard for all of us, I fel like I need to take a break on her issue of backtalking (or temper tantrums) I get too overwhlemed with her being my sister and can't handle it like I should. Could we try you taking that category for a while?" The good part of this is it will teach your sister that there is such thing as a man who will stand up for his wife and that a good man has boundaries and limits. This is almost more foundational for her to see from a father figure than from a mother figure- especially her sister. Siblings are "supposed to not get along". After this meeting, present your list of do's and dont's to your sister, along with the consequences of her behavior so she knows what to expect from both of you, no matter who is home. I have a 15 yr old sister myself, and this is a normal time of their life to set boundaries- much like/but differnt from - my two yesr old son. Hope this helps- stay strong, don't lose it, and model for her what it means to be her sister, to take care of her like your daughter , and how a mom also protects her own family. LEt me know how it goes.