Sunflowers and Vodka (Hetalia x Russia's Sister! Reader)

Everyone Knows That Ivan Braginsky has two sisters, Ukraine (Sofia) and Belarus (Natalia). But they forgot the last sister, She lives with Russia and has a small country near Russia. The girl is silent and unlike her two sisters, She doesn't love her brother in a romantic way.
Ivan fears that one day, she will be old enough to meet other countries, Which he doesn't want to happen for some reason. But of course, You can't stop time and Y/n came at the right age and met some..Interesting countries. Ivan doesn't like it..Not at all.