What I understood from the interpretation is that you want to broaden this to include all family members.
I would agree with including grandparents. There are some lovely stories about grandparents. First, there is the issue of well-being. There are also situations where grandparents freely agree, but other situations that are created by deplorable events. I have reservations about broadening this to include other family members who could find themselves in this situation.
I agree that grandparents may find themselves with the obligations and responsibilities of providing support. There are also legal and social issues. You will have to convince me of the merits of your amendment, which would broaden the scope of this motion to include other family members.