I want this to be a comment on the 'spanish thing' but for some reason I can not enter a comment.
Gurer ner n ahzore bs fcnavfu jbeqf uvqqra va gur jbeqfrnepu tevq. Gur barf V sbhaq ner Yhan (zbba), Fby (Fha), Fhq (Fbhgu), gvha (lbh), fna (fnvag), cn (sngure), rf (vg vf)
The country your sister most recently visited is:
The last step:
Some final notes:
Regarding the handwritten note:
A final easter egg:
I absolutely loved this puzzle! It hit the exact blend of "curse you" and "a-ha!" moments to make for a really enjoyable time. I sincerely admire the ...