I too know about disruptive family! My Mother has just recently passed away. At her funeral, my sister's daughter-in-law brought their child in a stroller and sat 3 seats back from the front with it. Then, proceeded to talk to it in very loud tones in playing with it. So, being the referenced type of person that I am, sitting on the front pew, I turned around and sshed her. She is not a really young person (upper 20's to early 30's) so, she should have known better than to sit and talk loudly during the service especially when a prayer was being said. I got my message across because she was quiet during the remainder of the service!
I wish you and your hubby the best during this event because I know it will be a stressful time for you. Blessings from down in the state of Va.
Hester