MINNEAPOLIS — The more time I spent in the galleries of Covered in Time and History: The Films of Ana Mendieta, the more I felt the lived presence of the artist herself. Unlike the bright white cube of a typical gallery, here the viewer is invited to walk through a filmy white curtain and enter a darkened, sanctified space. The artist appears only occasionally in her films, but she haunts them with her body forms found in earth, fire, blood, and water.