But anyway, I would say that if she's using this as an excuse not to relate to you, then it could be a problem. And as I said, I know exactly how that feels.
I am in the process of getting my own business off the ground right now. I spend a lot of time at my PC right next to her, during the same hours late at night when she is chatting (we have 2 pcs nearby to each other). While I am working on the computer for my business, she chats. Then we both go to bed at some point.
If she was not chatting she would probably be doing something else here in the same room with me like reading or watching TV. I would still be working, because it's the best time for me to work.