El patito feo
Isidro made her theatrical debut in August 2003 with Honk!, a musical inspired by Hans Christian Andersen's "The Ugly Duckling." Isidro played Ida, the mother of the "ugly duckling" played by Rajo Laurel. The musical was under Trumpets Production and was directed by Chari Arespacochaga. Honk! was held at the Meralco Theater on August 1 till September 7, 2003.