When did Cleopatra proclaim herself as queen?

Cleopatra claimed the throne for the first time in 51 BC after the death of her father. She had her brother as co-ruler, tried to squeeze him out, but he squeezed her out instead. She fled into exile and four years later, in 47 BC, Julius Caesar firmly established her on the throne. Caesar had the right to do this, because under the terms of Cleopatra's father's will, Rome was the protectorate of Egypt. So her reign officially began in 47BC.
Cleopatra claimed the throne for the first time in 51 BC after the death of her father. She had her brother as co-ruler, tried to squeeze him out, but he squeezed her out instead. She fled into exile and four years later, in 47 BC, Julius Caesar firmly established her on the throne. Caesar had the right to do this, because under the terms of Cleopatra's father's will, Rome was the protectorate of Egypt. So her reign officially began in 47BC.