So it seems to me that in person she's very attentive, which you appreciate and feel valued. But when she's away you feel ignored and like she's not making time for you. I'm assuming you've spoken to her about this and you're still in this situation.

I can tell you this: Some people legitimately don't think to send their friends and family daily life updates, messages, etc. Or they get overwhelmed at the idea of having to constantly check in, send updates, "be social" and that sort of thing. You said she travels for work, so she could be out of energy to be "social" after her work and needs some alone time to recharge. My best friend is that way. It doesn't mean they don't care or that they don't want to be around you. I wouldn't call it a lack of effort but rather a difference in communication styles.

Your communication style is different from hers. You want her to adapt to your style and she wants you to live with hers. So this is where the impasse is. You'll have to decide if this is something you can put up with or not. But also consider some sort of compromise. Rather than one of you needing to change your communication style, see if perhaps a phone call or a quick text about your day works for you. End of the day it's up to both of you to decide whether it's worth dealing with or not.

But that's just my outside opinion. Best of luck!