What's the age difference between our little star a r Eimel?

Im pretty sure Emiel is 17ish. It was mentioned in the novel so theres about a 6 year difference between them, they are closer in age than we think. There was something about Estelle's growth being stunted from malnutrition and being locked in a box..

I think it would probably be 5 years difference because our little just turned 12 and her birthday is at the end of the year

Anyway thanks now I can ship them with all my heart(≧∀≦)