Her work explores contemporary themes such as identity, human connection, and environmental issues, using symbols and vibrant colors to capture the viewer's attention with her reflections. What distinguishes Sastre's approach is the audacity of his chromatic palette and the expressive tension of his human figures. Each canvas becomes a space for dialogue between the sensitive and the social, the personal and the collective. He works with various media—oil, acrylic, ink—on multiple supports, from traditional canvas to cardboard, giving his works a texture and an almost tactile physical presence. His works exude a gestural force, marked by the movement of the line and the almost choreographic energy of the application of color, like a painted dance that invites the viewer to feel as much as to contemplate.