If you're the type who'd sooner swim in a cesspool than check your voicemail, you might want to reconsider your policy—you never know who might be on the other end.

Six-year-old Avery Huffman, who was diagnosed with an inoperable, cancerous brain tumor last month, got the surprise of her life when none other than Princess Anna of Frozen (voiced by actress Kristen Bell) left her a message lauding her bravery. In the video above, which her father, Brandon, posted to YouTube today (July 24), she's left speechless by the Arendelle royalty's kind words.

"I hope you're having a great day, and playing a lot with Hoppy Jumpy—I love bunnies!" Bell says in pitch-perfect character before getting down to urgent kingdom-related business.

"Avery: My sister Elsa says she's heard that you've been such a good girl, and that you've been so brave, she has decided to crown you as an honorary princess of Arendelle," Bell pronounces. "I think you'll make a great princess."

Avery's father noted on CaringBridge.org that Avery also received a few movie-themed baubles that spoke to her journey.

"Avery was given some Frozen bracelets, and one of the requirements to watch the movie tonight was that I had to wear one of the bracelets...so Avery picked it out, and it read 'Strong Heart, Strong Bond,'" he noted.

Listen to the Frozen message that will warm your heart! Plus, read more about Avery's condition, and donate to her battle if you're able.

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