2. You can probably guess what frustrates her most
She was SO articulate, and she still knows what she wants to say, and it's like pushing against an invisible barrier to try and verbalize what she has in her mind. Mark knows her so well, that he can pretty much say it for her, but it's a role switch for both of them. Before Gabby was shot, she was the one who always had something flowing from her, and Mark was content to stay in the background. This is really new for him, but he has jumped into the role of "spokesman" for them, one he never used to assume. Had it not been for the shooting, Gabby would have been the new Senator from Arizona by now, and not the appropriately named Senator Flake who was sworn in last week.
Her recovery is remarkable, but still horrendously insufficient to return her to her previous capabilities. I still think she will continue to make progress, but it will be interminably slow and never sufficient.