Most Helpful Guys
Let it be, it takes time to settle in. You are both still young and have the rest of your lives together. Why not make an occasion of a night in now and then and she may want to spend more at home on her own initiative. I just wouldn't ask her to stop doing what she wants thats a one way ticket to argument town.
Moved in with your partner? You must be freaking nuts! You better move out asap, or don't... and regret it for the rest of your life!
Most Helpful Girl
The easiest solution would be talking to her. Tell her how you feel and try not to seem attacking/blaming ☺
See how she reacts and try to compromise, maybe have days when you're both home & days when both are free to go out etc?
See what she says ☺