[WaterDrop]

..... I'm sorry dude..Even though it's not for you but for your uncle..

imo it all depends on how close you are with your uncle..
I know that if it had been my uncle.. I wouldn't be able to say a thing.. I love my uncle.. I really do.. But his mom just isn't in any way related to me.. So I can't say anything and I don't think I ever will..
I would just let him mourn his mom and give him space.. Nothing more I can think of.. I'd just be nice and try to help wherever I can..