Complex sentence: She became familiar with Surrealism from a copy of Herbert Read's book, "Surrealism" (1936), which was given to her by her mother, but she received little encouragement from her family to forge an artistic career.
Split into simpler sentences: She became familiar with Surrealism from a copy of Herbert Read's book, "Surrealism" (1936), which was given to her by her mother. She received little encouragement from her family to forge an artistic career.