Death of a Loved one

Lately My Best Friend has been very sad lately over her Aunt, who's in the hospital in China near death because of cancer, she really hates diseases now, because her aunt is the 3rd family member dying from a Disease, ecspecially when the last two has died on or near her birthday. I Dont Know what im really suppose to so, I've tried to comfort her with, what i hope very good explanations, and Quotes that helped me live through the Death of my friend.I am aware that a lot of people expect me to be able to comfort her the most through this, just because we've played together since young,shared secrets, candy, made Nicknames for our crushes, but i am not the best at comforting people when it's this situation, i get the reaction of uneasiness and wanting to cry too.She's going to China to visit her one last time during winter break, I feel like i haven't done much to help her, i feel really utterly useless now. I don't want her to fall into depression or anything, and idk how to help her because what I've gone through isn't exactly the same as her it's death of someone close, but we all think differently, I don't believe i really helped her much but made her laugh and forget about it for a while the last time she broke down during school. It's like idk, empty pain? there's bitter chocolate on the outside but onces u bite into it, it feels so hallow but it hurts at the same time, because u bit so hard into it.
[(Bit so hard in:Being so close to that person, literally will give up your life for them)
(Hallow Feeling:They were once what was inside, now it's hallow and it hurts)
(Bitterness: what once was happy laughter, and warm memories)]
I dont think it's wrong to bite so hard into it, because feelings are part of you, it's the affection u feel for one another through happy memories, and events, but it's sad when it suddenly gets cut off. How would i Help her, what would i tell her, people say time helps, it does but friends and families help too. Any Suggestions? Help? how did u guys help your family or friend?