Mother in Law Trying to Take Over Planning

So I am needing some advice. My mother in law is paying for our venue and and we are very thankful for that. She continues to tell us that it is our wedding and we can do it how we want it to be. However, I have shown her the inspiration of how I want the wedding (rustic/western) and she keeps sending me and now my mother picture ideas that are more glam and modern. I told her that when we arrive to the venue that I was going to get there early to decorate and she told me to not worry because she was bringing some of her friends to help her decorate so I could just focus on getting ready. Maybe I am wrong about this but me being very type A, I would really prefer to decorate myself with the help of others. I feel like she is trying to decorate it the way she wants. I know she has good intentions and is just trying to be helpful but should I say something to her?