"We don't want these girls to stay long with those militants. Anything can happen to them," Kachalla Bukar told the BBC.
Jihadists stormed the school in the town of Dapchi in the north-eastern Yobe state on 19 February.
The attack has revived memories of the Chibok schoolgirl abduction in 2014.
President Muhammadu Buhari said it was a "national disaster" and apologised to the girls' families.
Mr Bukar says his wife cannot stop crying and he cannot sleep since their "brilliant" daughter Aisha disappeared.
'We are begging the government to control the situation quickly.'"
Read article from BBC News.