If Christians are encouraged to called to spread the word about god and Jesus, why would the woman in question and her congregation / priests / family / friends not have shared her story with the world as a demonstrable, provable miracle?
She could show pictures or home videos proving she used to be X height and is now Y height. She could have multiple testimonies from people who know her.
Why hasn’t that happened? It would be such a rare (non existent many would say) thing, an unquestionable miracle, so why would this happen and then not be used to spread the word of god?