The symbolism of the feminine, the eternal, the ideal, of transformation, and light and darkness are common themes within her work. The motif of water and the boat are integral, symbolizing the journey between life and death, of passing through from one modality of existence to another. These are reflected in the artistic language Katri uses, creating luminous and ethereal light using oil colours and oil pastels. Soft pastel colours are used in contrast with deep, dark purples embodying light and darkness, creating a sense of the ethereal.