Agree 100% with all you have said. I was struck by a few of Wilder’s visual decisions which, if not earthshaking, at least show some desire to be expressive:

(1) The Expressionistic handling of a couple of kisses where the image goes all spirally for a few seconds;

(2) The extreme low-angle shots, of Robert Hutton’s doctor in particular, where Wilder shoots from floor level.

Another interesting element: I got an implication that one reason why Martha Vickers gets impatient with her companion played by Eve Miller, is that she knows she is being taken advantage of, but she is getting sexually satisfied and is willing to pay that price for it, especially after she is informed that she only has months left to live. Why not have some days (and nights) of enjoyment?

That she would die of a pulmonary embolism after Bromfield deliberately stresses her out, that the months of sometimes getting, sometimes not getting her correct medication would finally “tell” - all that is highly credible, and is why I praise the story / screenplay.