Complex sentence: She made several trips between Quebec and the Atlantic colonies in 1831, but was quarantined because of the cholera epidemic in 1832 and the owners lost some £16,000 on the venture.
Split into simpler sentences: She made several trips between Quebec and the Atlantic colonies in 1831, but was travel became restricted because of the cholera epidemic in 1832. The owners lost some £16,000 on the venture.