There were periods in her life when - to her utter mortification - the supernatural side to her life became very obvious to those around her. (faith.org.uk)
Before too long, the supernatural side of The Autopsy of Jane Doe comes alive and the more traditional horror tropes come in thick and fast. (oracleoffilm.com)
Alas, that's pretty much the only explanation given for the supernatural side of this film, though I wish there was more to it. (firstshowing.net)