Isn't it my baby shower?

I am having a baby shower at the end of July. I have a huge family full of men, women and children who all want to be there. Therefore I am having a Jack and Jill shower and they can bring their kids. I chose to have my shower in my aunt's huge backyard, because she has a nice setup, a pool and things to keep people entertained. My husbands sister had to put her two cents in and tell me that NO ONE has co-ed baby showers that it was strictly for women. She also said a backyard baby shower was ghetto and stupid and no one would want to come from her side of the family. She also offered for her and some of her family members to help me pay for a banquet hall to have a shower in so that people will show up and so that it will be classy. I can afford a banquet hall, the point is that I don't want one. I want guys at my shower and if they feel uncomfortable about going that is completely understandable. It seems to me like she is trying to take over and is being quite rude. Am I in the right? What do I do about this? I already confronted her and told her to mind her business and she yelled at me and my husband and called us immature and basically losers. What do I do? I want her at my shower, but then again if she is there I will feel uncomfortable like she is judging the way that I choose to do things.