She obtained the Second Honorable Mention for the paintings «Balcón» and «Patio» in the 34ème International of the Peinture, celebrated in the Chateau-Musee of the Cagnes-sur-Mer, Côte d'Azur, France (2002).
Her painting “Paisaje en Fuego Núm.2” became the United States and international promotional image of exhibition Latin American Women Artists 1915-1995.
At the beginning of 1999, she was invited by the Center of Innovative Printmaking and Papermaking, Rutgers University, New Jersey to give lectures and to create the lithography «Clasifícame ésta» as a resident artist.
In 2007, O'Neill began "Painting for a Specific Floor", a collaborative project with architect Andres Mignucci.
[1] Previously, as an independent contractor, she was responsible for launching the following websites: Banco Popular (1996); Ad Agency Lopito, Ileana & Howie (1997); non-profit Fundación Puertorriqueña de las Humanidades (1998); and Instituto de Cultura Puertorriqueña (1999).
The project lasted 10 years and involved a voluntary, collaborative and interdisciplinary collective effort that was a precedent of blog publishing.