What do you do when a facebook friend dies?

Ahhh. What an unsettling question, haha. Actually, someone who I knew my whole life (family friend) passed away 2 months ago, and it was crazy...cause we were facebook friends. I didn't delete her. And nor did the other people who were friends with her, I don't think. People would go on her profile and just write her messages about memories they had with her and everything. It would be weird to delete them right? But like...people just use that persons profile as a memorial type of thing. So I wouldn't delete that person. Although, it is kind of weird...uncomfortable...and sad.