Unequal Partnerships

This morning Beanz wrapped the presents I had gotten for my mom and dad and wrote the cards on them. I got upset, because these were presents that I picked out for my family. They had nothing to do with her, she just took them over and decided how to deal with them. I often feel like she needs to be in charge of everything, and she asks me what I think only so she can play devil's advocate, to help her make up her mind. To me, this feels like she doesn't think I'm capable fo making even an arbitrary decision. I feel like her assistant sometimes, doing the menial tasks so she can make the important decisions. Whenever her decision had nothing to do with me, when it's a totally personal subjective thing that affects only her, she can't flip a coin without asking me what I think. What do I think? I don't. It doesn't even enter into my head. She gives me all kinds of superfluous information that I don't need and don't want to deal with. If something is not relevant to me, I choose not to let it enter my mind. BUT when the decision is large and affects us both, she charges ahead and does everything herself without even consulting me. I know she's just trying to help, to take care of certain things without bothering me, but it's like she's totally incapable of judging which decisions matter to me and which don't.