Mary's Father has five daughters. Their names are: 1. Nana, 2. Nene, 3. Nini, 4. Nono and ??

What is the name of the fifth daughter?

Mary's Father has five daughters. Their names are: 1. Nana, 2. Nene, 3. Nini, 4. Nono and ?? What is the name of the fifth daughter?