I'm so sorry to hear about your great aunt! Although it is sad that you didn't get to share your newly learned hobby with her, I bet she was thrilled to see your knitting. Maybe she even wondered if your desire to learn to work with yarn came from her inspiration. There's definitely a connection there, and I bet she was bright enough to see it! In fact, even your desire to show her your knitting probably made your great aunt realize that she had passed her "yarn legacy" on to you!!
Perhaps one of her children or grandchildren might want to learn to knit and/or crochet from you. That might be a good way to pass the legacy on.
At any rate, I hope you enjoy your vacation and can find some comfort and closure during this trip.