Did I act inappropriately or in a cold hearted manner ?

A friend of mine I’ve seen three times in thirteen years had an old friend with whom she was best friends with for forty five years. She was a friend of mine also. I would have seen my friend? more often but we moved away for eleven years so we just emailed each other. Twenty five years ago we did spend time together going to clubs when we were between marriages and we moved back here four years ago. Anyway, the nice lady, deceased, died three weeks ago and my friend is devastated. I went to the viewing, we sat together and we talked a lot. I also got reacquainted with her husband I had not seen in over twelve years. She called me and told me she had been crying, missing her best friend. Then she emailed me and said her husband was having bad stomach pain. I emailed her and asked how he was doing. No response. Then I tried again four times and no response. I went on her Facebook and noticed her thanking her friends for the “cards and phone calls” offering sympathy over her friend dying. I never sent her a card. We were never real close but we were friends and I think she has dropped me permanently. Do I deserve this ? I’m not going to call her.