I guess it is "Margarita", the Spanish name is "A Margarita Debayle".
This film is an animated short film adapted from the poem "A Margarita Debayle" by Nicaraguan poet Rubén Darío (1867-1916). It tells the story of a cute little princess who has the courage to pursue her dreams. The excellent use of color and light, coupled with the music, creates a very poetic fairy tale world for the viewer.
It is available on site b, thanks to the UP owner.