Several of her films have received critical acclaim such as Burnt Money (2000), Waiting for the Messiah (2000), Bottom of the Sea (2003), The Aura (2005), and Paulina (2015).

After the separation of her parents, her mother, María del Rosario Cárrega, returned with her children to Adrogué, a city where Dolores and her brothers Tomás and Diego grew up.

In 2001, she had great recognition by integrating the cast of El sodero de mi vida in Canal 13, where she played a girl with a slight mental retardation.

In 2003 she starred in the unitary series Disputas and in the adaptation of the play of John Ford, Lástima que sea una puta.

During 2006, Fonzi starred and produced the miniseries Soy tu fan which in 2010 was adapted by Canana Films in Mexico.

In addition, she was part of the unit of TV Pública En terapia with the actors Norma Aleandro, Diego Peretti, Leonardo Sbaraglia, Ailín Salas, Julieta Cardinali and Germán Palacios.