No. Korson, not"Tufts", was using a working diagnosis of mito. This was not a confirmed diagnosis.
Doctors at BCH diagnosed her as having somatoform. We do not know if they also fully abandoned the working dx of mito. As NONE OF US HAVE SEEN HER FULL RECORDS OR CHARTS, we do not know anything other than the above two facts: Korson had a working dx of mito, BCH gave her a dx of somatoform.
It is fully possible she has both these conditions. To merely say, as you put it in a different post "mito would explain the symptoms" shows a lack of understanding of both diagnoses. Mito does not explain any and all symptoms a patient has. If you go to the doctor for ear pain and discharge, you aren't going to have those signs and symptoms chalked up to mito even if you have a confirmed dx of mito. You're gonna get a dx of otitis media, probably.
And further, this isn't even taking into account the possibility that she has other, as yet unknown conditions besides mito or somatoform. There could be anything.