Traveling after baby is born

Soo, my Significant others mother wants us to come down in November after the baby is born. We live in Ohio, she lives in Rhode Island that’s a 11 hour drive and that’s without stopping. And on top of that I have a 9, 6, and 1 and half year old. That’ll be stuck in the car. I think it’s super unreasonable for her to want us to come that soon after the baby is born ( due October 22) and she won’t even have her shots yet..how do we break it to her that we just aren’t coming down?