Ehh.. mostly depends on her interest level and the type of relationship you guys are in or the type of relationship you want..
I mean you definitely wanna stay busy with other interests other than her, but you also have to know how to balance it. I've found I do my best when I am busy with the Army, working out, doing stuff, and chillin with my other friends.. thats key IMO, just having a life outside of her. If you are staying busy you don't have to ignore her, you truthfully just don't have time to be on her ass 24/7, but she will appreciate that if shes a woman with other stuff going on, ya know?
As far as her just "leaving", it goes back to her interest level. If she's like most girls and actually likes you, then she will crave seeing you. I think its all about how you make her feel when shes with you. If you guys have good times and she likes you, than just do your thing and include her in your life.
I dunno man, everyone is gonna have different views and opinions, based on their personal experiences with girls/women.. I try to keep the games to a minimum, no need if you guys have a good thing going..
but like I said, thats based on my past relationships and trial and error.
Hope that helps..