What a tragic loss. No doubt, amazing stories will come from the rebuilding.
Although I've done several quilts with a cross theme for retreats (formerly NCNY Walk to Emmaus, now known as Closer Walk), none of them invloved bargello piecing. I agree that the cherry blossom one posted looks like it could be adapted by somebody familiar with bargellos.
Good luck - can't wait to see where God leads you.