Good Morning TTaylor,
I am sorry to hear about wife's problems. ((((((((Hugs to her ))))))))).
Carotid angioplasty is often combined with the placement of a small metal coil called a stent in the clogged artery. The stent helps prop the artery open and decreases the chance of it narrowing again. Did your wife have a stent placed ? If not I would discuss this with her Dr. and if you are not satisfied with this Cardiologist please do seek out a second opinion.
Keep us posted on how she is doing.