Giselle Santoyo shared video of the moment when she surprised her dad by taking his last name.
He can be seen breaking down in tears as he opens the gift and looks at what appears to be a frame.
"My greatest gift in life is you being my dad. Our goal was for you to adopt me before I turned 18, but it was too late," she tweeted on November 8. "Here I am with your gift. I changed my last name for you. I love you forever, happy birthday I am legally Giselle Marie Santoyo."
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