Complex sentence: On January 12th of 2004 she took the oath of office in both English and French languages, succeeding Murphy J. Foster, Jr. as Governor of Louisiana, while taking his Chief of Staff, Andy Kopplin, on under the same post.
Split into simpler sentences: On January 12th of 2004 she took the oath of office in both English and French languages, succeeding Murphy J. Foster, Jr. as Governor of Louisiana. She kept Foster's Chief of Staff, Andy Kopplin, on under the same post.