"Poor result "

My mum passed away I a&e in July when the under taker got my mum from the hospital her wedding ring was missing thy said thy had looked all over and couldn't fine it she had it on and never took it off they said we could put a claim in the claim as been rejected as thy said my mum was in sound mind she might have been but was really poorly and we didn't expect the out come as she was waiting for a bed on a ward then she passed a few hours later so her ring went missing after she passed so some thing happened after she passed and getting to the funeral home so how can thy say she was in sound mind when she had passed we want her ring as was left to her granddaughter who ever as taken it want to be ashamed