Yeah, whining is TOTALLY necessary. Know what happens when you don't let the bad vibes out? They come out anyway, probably in the form of taking it out on those around you who don't deserve your ire. No person is "strong" enough to absorb the horrible shitstorms life can throw at you over long periods without a break or any real help. You have every right to be angry and upset, both at what's happening to your mum and at the selfishness of your family.
It's a shame all the people here can do is provide a sounding board, but I really don't think you need to worry about letting off steam. You certainly shouldn't feel guilty about it. Just wish your family were giving you the hugs and tea and cake I wish we could right now.
