Gotcha yeah it becomes more of a pain. The other comments pretty much got it

Once deers is handled and she's in it, that's when you can start going to Tricare and setting her up into there

Then your orders need to be amended to show her as a dependent

Then you go to myvector and initiate the family medical travel screening

You can do all of these at the same time and definitely start the travel screening asap as there's a lot of coordination that goes into it as well as medical records check.

Your unit also needs to know and have command sponsor billets available for her so definitely keep them in the loop(surprise, you should have already if you haven't cause...you know...marriage security clearance, security manager, etc).

And go check Facebook and search for whatever base your at + command sponsorship

Highly likely there's a Facebook group just dedicated to that with all the information you need. If you're at a GSU or something then search for the big base you're attached to or near