Can be either. Ist es eine Freundin oder deine Freundin? 

Well, if someone says "Ich habe eine Freundin" or "Ich habe einen Freund" (depending on the gender) it usally means that he/she has a boyfriend/girlfriend. In order to emphasize the relationship you can also say "Ich habe eine feste Freundin" / "Ich habe einen festen Freund". 

Eine Freundin implies a girl that is a friend of mine. Meine Freundin implies that it's my girlfriend. Or if a girl says it either her lover or very best friend. The term is still very ambiguous.

For a girlfriend you can add: Wir sind zusammen.

when a sentence is made with Freundin then how do you distinguish with female friend & girlfriend.

Antwort Sie Bitte. 

What is the meaning of "deine Freundin"?