<human>: Long and short of it is, we've been dating for over a year, she's never had many friends. I've always had a pretty solid core of people I considered friends, and I try my best to maintain those friendships. 

Our work schedules make it difficult to see each other a lot (She works mid-days, I work midnights), and we don't live together which is also tough. I play in a band, I work a full time job where I can't send messages all day, and I have other friends I have to maintain relationships with, and have the option to, when she's not there to hang out with. I'd spend a lot more time with her if I could, but our schedules make it neigh on impossible to see each other more than once or twice a week. It's hard, but she's a wonderful girl who I love very, very much. I just worry that because I have other things in my life that are important to me, and she doesn't seem to, she doesn't understand why I'm not constantly texting or feeling lonely, while she definitely seems depressed and lonely.

Any time I try to talk to her about it, she gets offended and upset, so I just try to avoid it. I'm reaching a point where I feel like I can't talk about it anymore, and I'm starting to get frustrated with being her only social outlet, almost to the point I'm wondering if this is worth doing anymore because it's gotten repetitive and irritating. 

I love her. She means the world to me. But just because she's sitting at home by herself not doing anything while I am shouldn't make me feel guilty, and it's really stressing me out.

Provide a brief overview of the text.
<bot>: Girlfriend doesn't have friends or hobbies, I have many. I'm her only outlet, she won't talk about the issue, and it's beginning to wear on me. What should I do?