As far as her graduation, which is better than whatever your doing, call this number at the bottom of this. I'm not sure how often the access list is authorized, but they'll know. They know plane tickets and hotel bookings are at stake at times.

https://home.army.mil/jackson/index.php/about/Garrison/DES/physical-security/access-control

As far as the rest, write her and don't expect a reply. Let her focus on what she's doing. Go learn guitar and impress her with that while she impresses you with what she's learned at graduation. Surprise her with it. Focus and learn something. It's a good habit for you to learn with her doing this career. Be the Dude, not the Big Lebowski.

All she'll ask you is what you've been up to. So, go do something. Don't give her a reason to worry by worrying too much.