This witness is not qualified to have an opinion on T's sanity, sadly.
And if it is true that the State was not allowed to send their own expert to interview LS, that is consistent with Colorado's system that it is the State that must prove sanity (without the testimony or cooperation of the defendant, who does not have to incriminate herself).
Dr Lewis has an advantage over the State's experts, even without last night's shenanigans.
The one advantage on the State's side is that the DoC experts found T. competent to stand trial and then found her sane.
The Jury will have to choose a lane (or be divided into two lanes).
IMO.