She returned to Mexico in 1956 after separating from Guerra In 1960, she married Mexican abstract artist Manuel Felguérez in Washington, DC.Both were of the new Generación de la Ruptura artist movement, which had trouble selling paintings in established venues. Carrillo and Felguérez turned to Mexican handcrafts and folk art to make money to survive. Carrillo had two children to support as well, prompting her to take on a Czechoslovakian persona of “Felisa Gross” to produce purely for commercial purposes.In 1962, she traveled to Peru with Felguérez to exhibit her work at the Instituto de Arte Contemporáneo. On this occasion, she met Peruvian vanguard artists such as Fernando de Szyszlo.
In the 1950s she became an adherent of automatism, a theory introduced to Mexico by Austrian painter Wolfgang Paalen. It is based on Surrealism and posits that the artist’s hand should be guided by its own movement in order to tap the subconscious. She then moved onto her own abstract style which has been classified as “lyrical informal abstractionism” or “informal expressionism.” She never rejected the labels but always insisted that she did not have a real method for creating her works, or if she did, it changed often. Wikipedia