Complex sentence: Initially she and Poole did not get along, her French ancestry and openness about her emotions, contrasting with Poole's highly repressed nature, however over time their relationship became a friendship and shows some hints of romantic interest.
Split into simpler sentences: Initially she and Poole did not get along, her French ancestry and openness about her emotions clashing with Poole's highly repressed nature. However, over time their relationship has become a friendship and shows some hints of romantic interest.