My fiance and I are planning a simple outdoor wedding on my parents' farm. We're both environmentally- and creatively-minded, and have lots of fun DIY plans to carry out our vision. The problem is that his mother has practically taken over every aspect, and won't take "no" for an answer. She's constantly contacting me (in person, by phone, and text) to push more of her ideas, which are very different from the wedding we've explained we want. It's reached the point that I'm not even enjoying planning anymore. I feel like I have to defend every plan that we have, right down to table decor. It's exhausting, and straining my relationship with her significantly. I've even set up a Pinterest board just for her to help her see our vision and invite her to submit her ideas there so it's not so overwhelming, but no dice. In addition, she won't let go of her guest list of people my fiance does not know well or want to invite. We've cut our own friends to lower the guest count. Help!