Bonnin began her career as an actress at a young age participating in plays such as Cartes a nenes, Contes dels boscos de Viena or El bell lloc.

Also that year she joined the long-running TV3 production El cor de la ciutat where she played Sandra Benjumea until 2009, when the series ended.

It's a text written by Paco Bezerra and directed by José Luis Gómez that deals with the paraphilia of an adult who uses the Internet to gain the trust of a minor.

She received critical acclaim for her performance in the play La dama de les camèlies, a text by Alexandre Dumas directed by Hermann Bonnín.

In addition, she also participated in the play Ocells i llops by Josep Maria de Segarra in the National Theater of Catalonia and in the musical Tots fem comèdia by Joaquim Oristrell.

Bonnín participated in 2 episodes of the first season where she played Sofía, a young woman who arranges a date through an Internet application with Paula (Laia Costa).

Within the Grec Festival, she participated in the play Las brujas de Salem by Arthur Miller, directed by Andrés Lima and adapted by Eduardo Mendoza.