Complex sentence: In a letter penned to her mother in September 2013, Tóc Tiên claimed the two haven't spoken to each other since her switch from medical to Communication studies, and that her mother was "furious" about her image change.
Split into simpler sentences: In a letter she penned to her mother in September 2013, Tóc Tiên claimed the two haven't spoken to each other since her switch from medical to Communication studies. She also revealed that her mother was "furious" about her image change.