"I arrived today everyone was so lovely and kind, it was incredible," Tanja described.
"Moments later Charles and Camilla walked past us and Camilla and I were sharing a smile."
Tanja added: "As soon as the books were signed Camilla went over to me!!! You can probably imagine how happy and excited I was. Camilla was wonderful and she even introduced me to Charles, who knew about my blog as well. He actually told me that I was 'very kind' and had done 'a lot of good things'."
In an even bigger shock for the fan, the British royal gifted Tanja a “small present” in her “favourite colour” – although the super fan wouldn’t reveal what the gift actually was.
Describing the Duchess as "incredibly kind and nice and so beautiful", Tanja praised Camilla for giving her "the best day of my life".
"I’m so thankful she took the trouble and time to see me and to talk to me. She really is the best person in the world and I shall remember today all days of my life," Tanja added.