If a kind and generous Christian died 20 years ago, might their rebirth have resulted in there being a 19 year old person in the human realm now?

If a kind and generous Christian died 20 years ago today, 21July2015, might their rebirth have resulted in there being a 19 year old person in the human realm now? I want to assume that the kindness and generosity perhaps trumped the ignorance about samsara, resulting in a new individual array of aggregates and store consciousness inclined toward learning about Buddhism and Nibana. I wonder this basis Theravada approach to rebirth.