Have you gotten the form letter yet, that states when her graduation will be? If not, keep watching the mail. It should be there any day. My daughter left Nov 23rd and I just got the form letter. Our daughters are only days apart so probably will have same graduation date. You should get that form letter today or tomorrow.
If you don't get it in the next couple days, call her recruiter. His job isn't just to get your daughter to sign the papers, but he also needs to take care of you all the way through graduation. If you have any questions, he needs to get you answers.
oops, we have been chatting in the Main Room. I know you have grad date. Just be patient. They can't write until the first Sunday after they actually started training....and that can be two weeks after they arrived. So your daughter may not have been able to write her first letter until this past Sunday...so it is probably in the mail on its way to you.