Baby Shower

I'm only 6 weeks so I have a long way to go. However, when I told my sister that I wasn't going to have a baby shower, she flipped. I have 3 kids already so I just don't feel the need for another shower. I can buy everything I need. Also, my mom passed away 2.5 years ago from cancer and she played a huge role in my baby showers. She decorated cakes as a hobby, she made my baby shower cakes and helped plan, she was there for everything. So having a baby shower without her would just get me depressed.

Do y'all think I'm being unreasonable for not wanting a baby shower?