Jill Chime, from Liverpool, said she had seen the name of her sister, Antonia Attuh, a senior manager with the Central Bank of Nigeria (CBN), on the final passenger list from the Dana Air flight which crashed on Sunday.
Another sister has flown to Nigeria to help relatives find her body, which they believe is in a hospital mortuary. Attuh was travelling to Lagos to attend a course and regularly flew to Nigeria, Chime said.
Speaking to BBC Radio 5 Live's Up All Night programme, she said: "My sister was travelling to Lagos and that was as far as I knew. I wasn't certain of what airline she had gone on.
"We were immediately concerned because we had spoken to my sister in the morning and she was telling us she was going to Lagos that afternoon.
"When I heard about the crash, I had to try and find out what airline she had taken."
She added: "My sister was a wonderful person, quite an exceptional person. She was a statistician - maths was the thing she loved doing and loved most."
A cousin, who was due to collect Attuh from the airport, told Chime her sister was aboard the flight, which was also confirmed by Attuh's husband, who had seen her off.
"I also have my cousin who yesterday had gone through 30-odd bodies trying to locate her, and today he has gone through a further 40. But as of yet, we still have no confirmation of a corpse," she said. "It is very difficult and distressing."
Chime called for an inquiry into the cause of the crash. She said: "Only then can the lessons of this tragedy be learned. My sister would not have rested until she had gotten to the bottom of what happened and why it happened."
The plane crashed about five miles north of Murtala Muhammed International Airport in Lagos, after travelling from the Nigerian capital Abuja. It crashed into a printing works and residential building in the busy Iju-Ishaga suburb.
An unknown number of people on the ground were also killed.
The Foreign Office was unable to confirm whether Attuh was aboard but a spokeswoman said: "It is believed that there was a dual British-Nigerian national on board the flight. The Foreign Office has been in contact with a member of her family and offered consular assistance."
*Culled from telegraph.co.uk