Her dad was Ptolemy XII; lucky no. XIII, 10 years old at the time, became her co-ruler & husband
.... 
shared the throne with the elder of her two brothers (the ten-year-old Ptolemy XIII)
,... [DOC] [TLE] The Queens of Egypt - Ancient Egypt Online [PAR] While the wives of Egyptian Pharaohs were, without a doubt, powerful and highly 
... At the time, her son, Den, was too young to rule Egypt and so Queen MerNeith 
(meaning beloved by Neith) became the very first female ruler of ancient Egypt.