Not quite a bereavement, but in December 2014 I was in MCO with my husband, having flown BA from LGW. We received news that an immediate family member had attempted suicide.
As we had a flydrive I had to call BA Holidays. They told me there was nothing they could do as the flight that night was full. That was it. She said we would have to wait for the next days. After I asked her to just cancel the return as we would have to take a Lufthansa one way I had already looked at, she changed her tune and all of a sudden two seats in the same class we were due to return on (WT+) had magically become available, for a £600 change fee. We took these and the travel insurance is still sorting out the claim.
We ended up in the front row of WT+ with super legroom, presumably as we were the last 2 to check in after a dash to the airport. Obviously weren't in a state to appreciate it tbough!