Complex sentence: When she was in Bolivia she was considered "Chilean", and when she was in Chile, she was nicknamed "bolivianita, cholita", or "lauquita" for having lived near the Lauca River.
Split into simpler sentences: When she was in Bolivia she was considered "Chilean", and when she was in Chile, she was considered "bolivianita, cholita". She was also nicknamed "lauquita" for having lived near the Lauca River.