You're a sweetie to do this.
Unless she is a quilter she won't have have a clue as to the names of the quilt blocks you do. So, IMO, choose ones you like and don't worry about the names of the blocks being "biblical". Something with the names of her kids on it would be great. I'm considering doing something for my parents with all the names of the children and grandchildren embroidered (but it's not a comfort quilt, but rather a 'grandparents' quilt.)