As unlikely as it may sound I think that Maura just happened to be near the wrong person at the wrong time. I'm sure the odds are very slim, but what else can explain her just falling off the face of the Earth? I'm sure other things are possible too like her being alive and living an assumed life. I'd bet that if any one of us saw her tomorrow we would not recognise her. I'd like to know the odds of either one of those things having happened. I'm sure no one could tell us.