Hey love, I have nvr been in such situation but I feel that you should spend more time with her. Cherish and create the memories with her. No one is ready to die like that. There are definitely regrets especially at such a young age. Just give her happiness and don't let her think of her condition. Don't give her reasons to feel more upset. If she has things she wanna do, do them with her if possible. Just don't talk about her conditions and try to divert the topic since it'll get heartbreaking for both of you especially her. Lastly, I'm really sad to hear that your friend has such a condition. I hope I helped. Sorry love T^T

You should try to motivate her if you ask me. Tell her that being happy is the only cure to be healthy sometimes. Save her by making her feel good or... Make her live her last days happily. Be strong both of you. Hwaiting

Embrace the situation maybe? There's no alternative, so if she's being strong enough to accept her condition as her friend so should you. I've never been in anything like this so I'm not very sure but what I'm sure is that your friends probably hates it that they make you cry so enjoy the time to together rather than being sad. So what you want with them, tell them what you want to tell them, that way at least you would not have regrets :D Be strong.