This edition is written in English. However, there is a running Spanish thesaurus at the bottom of each page for the more difficult English words highlighted in the text.
From Wikipedia: Little Women (or Meg, Jo, Beth and Amy) is a novel by American author Louisa May Alcott (1832–1888). Written and set in the Alcott family home, Orchard House, in Concord, Massachusetts, it was published in two parts in 1868 and 1869. The novel follows the lives of four sisters—Meg, Jo, Beth and Amy March—and is loosely based on the author's childhood experiences with her three sisters.