To be honest mate, the fact that in your mind you want to come back home (I'm Irish too) might be the source of the problem between ye. I mean, she might be getting a vibe that something is wrong, when really, it's only that you want to return home again. Just say it, see what happens. If it all blows up, give it a couple of days to calm down and ask her rationally what she thinks. If she doesn't lose her temper and still says no, as basher said, think about it really. What's more important?