At that same time, she joined D'Astro's ballet group as a dancer, where she met and danced alongside, among others, Gladys Nuñez, and also became interested in theater.
Haddock then participated in a show named Tres Muchachas de Hoy ("Three Modern Young Ladies"), where she shared hosting activities with Sonia Noemi and with Alba Nydia Díaz.
[3] Haddock decided to move for a period to Los Angeles, California, to try her luck there and also to study at the prestigious Lee Strasberg Institute acting school.
Haddock accepted the offer and moved to Canal 2, beginning what would turn to be the most prolific era in her professional show business career.
The move to Canal 2 proved pivotal for Haddock; also in 1977, she was chosen to participate in a telenovela named Cristina Bazán, where she worked alongside Venezuelan singer and actor José Luis Rodriguez and Puerto Ricans Johanna Rosaly, Luis Daniel Rivera, Esther Sandoval and her former co-worker, Alba Nydia Díaz.
These included El Idolo ("The Idol", once again alongside José Luis Rodriguez with Marilyn Pupo), Fue Sin Querer, alongside Sandro de America and fellow Puerto Rican Von Marie Mendez, and Tanairi, in which she shared credits with Mexican Juan Ferrara and, once again, with Von Marie Mendez.
Haddock during this era recorded eight gospel musical cassettes, recorded for the Catholic organization Asociacion Pro Devocion de la Virgen del Rosario del Pozo and one album, titled Porque Para Siempre es su Misericordia ("Because His Mercy is Forever"), all of which were released under the True Way Productions label.