Beyond observation, the only way to know if she has sustained permanent brain damage is if she releases her medical records (As was the case with Bill Clinton's and Obama's full medical records -- the chances of that happening are absolute zero.)
(The MSM seems to have little interest in brain pathology when it comes to Democrat candidates. Joe Biden had two brain surgeries, often exhibits quite bizarre behavior and there's been no interest as to why that might be the case.)
She's a blood clot in the heart of America.