Serious Shower question

This is my second  pregnancy. My cousin (he and I were born on the same day, 2 hours apart) and his wife are expecting 6 days before I am. He is in the military and are living in NC. Our family is from DE and her family lives in AL. She seems pretty certain that no one is planning a shower for her. She isn't terribly close with her family and she doesn't think our family will have one since we live so far apart. I would hate or her to go through her first baby with no celebration. I reached out to her mother and my aunt, but haven't heard back rom them yet. Is it ok for me to talk to them, and maybe let them know I could help plan a shower. I don't really know how to go about this or even if it is appropriate or necessary for me to do this. Even if I did, do I plan it around our house or should I try to plan one around their house? So many things to think about. Thoughts?