Complex sentence: Dietrich and her sister Dorothy Newkirk Stewart continued to do restoration and repairs on El Zaguán where they set up apartments for artists, and a artist residency is still run today by the Historic Santa Fe Foundation.
Split into simpler sentences: Dietrich and her sister Dorothy Newkirk Stewart continued to do restoration and repairs on El Zaguán where they set up apartments for artists. An artist residency is still run today by the Historic Santa Fe Foundation.