So if you hate this country so much

I think what she might be referring to is "social" life - there is none here... and therefore you constantly want to talk about what makes you happy. Memories of her country might be something that makes her happy. If she had the same social life here - she would not be thinking about any other place.

We all love the greener lands. So instead of being tired - let her be your friend and let her tell you what's so good about back home.