After graduating in Information Sciences from the Complutense University of Madrid, she joined the newspaper La Gaceta del Norte [es] in Bilbao.
The exit was framed in the context of a tough confrontation between Pedro J. Ramírez, director of the newspaper El Mundo and César Alierta, president of Telefónica, majority shareholder of the network at that time.
"[4] At that moment, Luis Herrero on Cadena COPE and María Teresa Campos on television, both critics of the way in which the journalist was fired, offered her a spot on their respective political tertulias.
At the beginning of November of the same year, it was Isabel San Sebastián who left the set of 59 segundos due to the allegations that Calleja had leveled at her, accusing her of "having fattened ETA".
[8] The ruling was overturned by the Supreme Court in November 2014, which "placed the conflict in the field of freedom of expression and the right to honor, and concluded that this was prevalent in this case inasmuch as the accused journalist limited himself to making a criticism regarding a subject of interest and in a context of previous confrontation.
Beginning on 24 October 2011, and on the occasion of the remodeling of ABC Punto Radio [es], she presented the nightly news program El contrapunto until 15 March 2013.