Although she lamented lack of quality preparatory games, Mmadu urged the Super Falcons to give their best to retain the continental crown but urged the NFF to motivate the girls to success.
"I think they have a good coach in Florence Omagbemi," Mmadu said on Channels TV.
"She was my teammate and captain, I know she is a winner and a good fighter, she doesn't like to lose.
"I know her very well and expect her winning spirit to help the girls. We have to put our country first so that we retain the trophy.
"It is sad they could not get international friendlies like we had in our days but whether we get a foreign tour or not, what matter now is we getting our acts together to prove we are still the best in Africa. "
"I believe they will do well with Omagbemi and the rest in charge of the team but I hope the Nigeria Football Federation give them the right motivation they need to succeed," she continued.
"I remember what happened to us when we were playing in South Africa, we were given meals that gave us concussion and we had a running stomach.
"I will appeal to the NFF to provide the players some local meals in their semi-final and final games because I know they will be in the final.
"We have to go there and do our best and not being over confident because no team is will be a push over. We have to go and fight to win the tournament again."