Complex sentence: Helen Craik (1751--1825), was a Scottish poet and novelist, and a correspondent of Robert Burns, whom she praised as a "native genius, gay, unique and strong" in an introductory poem to his Glenriddell Manuscripts.
Split into simpler sentences: Helen Craik (1751--1825), was a Scottish poet and novelist, and a correspondent of Robert Burns. She praised Burns for being a "native genius, gay, unique and strong" in an introductory poem to his Glenriddell Manuscripts.