Martín still preserves a photograph that her father José Luis took of her when she was four years old, in which he wrote: "Mi cómica hija María Luisa tienes madera de actriz, ¿pero será bueno eso para ti?"

During the 1980s she cut her teeth on stage with plays like The travels of Pedro the lucky, The scandals of a village, The balconies of Madrid, Phaedra, The rhinoceros, and Can't Pay?

After this break in television in 1999 she embarked on a successful theatrical project alongside the actor Juan Echanove, of Luis García Berlanga and Rafael Azcona's Not on Your Life.

In 2003 together with her production partner Albert Bori she started the theatrical company Art Media Producciones with whom she produced her own shows after her divorce from Joan Llaneras.

The cast included Juanjo Puigcorbé, Frank Feys and Belén Constenla, In 2010 she joined the new production of Gran Reserva on Televisión Española in which she played a police officer.