Feel dreadful now, but my neighbour who I don't know that well recently told me her cancer has spread to the brain. I knew she had cancer already and my other friends told me this before so it wasn't as if it was news.
She is a cheerful lady and we were all having fun with our dc that day when we met up after a long while. She said she was glad the rest of her body was in remission.
Because she was being so positive, cheerful and upbeat about it all I'm afraid I took the same approach. I offered to help her out as she can't drive, and invited her round etc with the dc she was happy saying that was kind etc and that she would like me to teach her dd to ride (our pony)which I've offered to do.
It wasn't until I got home that I felt so utterly awful for not offering my condolences etc and for not behaving in a graver manner.