I have a friend who is very sick

This friend of mine stopped talking to me for a while because we didnt agree on some dumb matter. I got a call last year with a huge apology and I was told they were very sick. I was so mad at this friend that I was good with never speaking again. Now all I feel is bad for this person. I want to help and be there. They have nobody anymore. So i have been there. I hate to come across as some sort of doormat and I'm not usually. But I just really feel the need to be there for this person.
Just a little reminder that life is so short and unpredictable.