Reliable enough???
Not for me. Not everything said by a rebbetzin (even if she’s the daughter of a rav covered in a book) is true.
As I stated above, the longest known medical coma is 37 years. Now, you’re telling me of a coma that lasted 73 years, more than double the length of the known record. I would think that if someone was in a coma that long, it would certainly have been written up in medical literature. There would certainly be records available to corroborate the story. Can you provide any? A name, a place, dates? Anything?
Until then, I’m calling the story an Urban Legend.
The Wolf