https://speakinggrief.org/get-better-at-grief/supporting-grief/ring-theory

This website in general has lots of useful things for you to read, but this particular part is the most important, in my opinion.

Also, when I first clicked, I thought this was going to be a request for gift ideas or something, and I'd like to make a suggestion based on that initial assumption. Maybe you could write her a long letter. Share some of your feelings there if you like, but using the link as a guide, try to be careful about the moments you pick to share those feelings. Then you can try to keep things basic when you visit.

Also, I looked at your profile briefly to see if I could get a handle on your age, and I'd suggest that if she's into it, you should draw her some beefcakes to keep her entertained. :P