So Mary is alive attending meetings pretending to be a JW. Sounds reasonable. Did you immediately recognize her, and there was a beautiful reunion? Or did you get to talking and it was like . . .wait a minute . . . I'm Jesus, your Mary. . . . It's been too looong! Warm embrace . . . . hang on the songs starting, talk more after the meeting.
When she recognized you did she yell out "Jesus Christ!". That would be awkward, JWs can be a judgmental lot.
Just sounds like such a good story, I would love a few details.