Once a member of the hall stops showing up due to serious illness, unless they are part of some huge clan (we are not a huge clan in my family), then they are going to be forgotten.
I've made a number of references here on this site to the way my parents were treated by JW's in their final years. The JW's are some of the most hypocritical pieces of s--t that exist when they yap about "love". As my father said shortly before he died, "Jehovah's Witnesses have "love" on their lips, but NONE in their hearts!
Realistically though that happens in all religions. My uncle and aunt, both staunch Southern Baptists, who are 96 and 92 respectively no longer have any members of their church who come by any more. As my uncle said, "They have forgotten us."