Don't take the Claim Ltr to mean more than what it asks, you left info out that needs to be completed.
As to your Dr's SISOC, marginal at best. No indication that he actually reviewed your 2002 SMR DX of SA.
SC SA DX'd needing Cpap or Bipap is rated at 50%, even if you don't use the Machine, which would not be wise. If you also have a DX requiring supplemental 02 while sleeping due to P02's dropping below 90%, that does support a possible Chronic Resp Failure claim.
Check out the 38 CFR 4, SA Rating for 100%. You'll notice that there are 3 or 4 DX "OR'S" listed, any (1) of which could get you a bump to SA 100%.
That worked for me, this past 12/15. It took a VA Quality Review of a 07/15 increase Denial Decision, but the Sr Rater agreed with my position regarding my SA Request for an increase to 100%. Every thing regarding my 02 use and meeting another (2) of the 100% requirement was in my VMC records. The original Rater just didn't understand the significance of the "OR's" and the 02 Use. Got 100% Retro'd back to 01/14 with SMC S (1).
Send her a black rose with a small card that says "Paid for by my VA Benefits" and then ignore her.
Unless you get information that she is trying to cause you a problem, you probably dont need a lawyer. If she is calling up SS and the VA and all the other points of contact about your disability, then you might think about it if she is lying. This would be defamation of your character if she is telling stories about you that are not true, in an attempt to cause you harm. Then you would want a lawyer.
Your Scheduler 100% SC for PTSD, not a combined Rating, right? NO IU Rating involved?
Any mention in your Award Letter regarding a possible Fiduciary Appointment? I know you mentioned your $6K Retro Deposit, it's just that a 100% PTSD Vet, who may or may-not be homeless and may or may-not have RX or other Dependency issues, is usually a prime candidate for a VA Fiduciary Appointment.
At this stage of your PTSD Rating Decision, kind of the "11th Hour" so to speak, just try to relax.
The VA PTSD Rating Decision won't move any faster or slower based on anything you could do at this point. You have a PTSD DX, it all comes down to the Raters Determination regarding your MST Supporting Evidence, it will either be Compelling or not.
Keep in mind, the VA "Benefit of Doubt Doctrine." If for some reason, the Rater determines that your MST "Marker Evidence." doesn't quite Seal the Deal and the evidence for and against an SC rating is determined to be in "Equipoise," you get the Jump Ball and the SC is Awarded. At least in Theory.
The only thing you can and probably should do, practice the Anxiety/Stress relieving exercises that you learned in Group Therapy. Get together with someone from your Group, it really does help to talk face to face.