Her mother insisting that the dna test isn't correct reminds of Frederic Bourdin who pretended to be missing Nicholas Barclay and even lived with his family for months before being found out. They wanted their son back so badly that it didn't matter that his eye colored had changed, he had a French accent, etc. They just kept finding reasons to believe he was Nicholas. Denial can make us believe all sorts of things. https://en.wikipedia.org/wiki/Frédéric_Bourdin What I'm not quite sure I get though is that I'm pretty convinced the mom knows what happened to Alexis and if she does, then what is this? Is she in such deep denial that she honestly believes what she's saying?