Stop in for a cup of coffee

Need some advice.

as you know, my wife's grandfather passed yesterday. Originally, we were scheduled to go over there as is tradition for Thanksgiving tomorrow. With his passing, no one has even mentioned it, focus right now is on the final arrangements and his final affairs. So we have no idea if the get together is still on for tomorrow or not. If it is, great, if not, I was thinking of surprising my wife by cooking our own Thanksgiving meal for the first time ever for us, the kids and maybe her parents. I have all the items needed already. Question is, would it be inappropriate for me to ask if the family is still planning on doing the original schedule tomorrow?