Drew Your post raises a number of thoughts and concerns, for you and your son ... but not the alien so much.
The two of them are clearly acting out on the same script. They may plan to live off illegal activities, or have other jobs already, or even plan to move away together. Who knows?
Forgive me for considering some worst case worries here but you can't pretend things aren't a bit crazy. The only certainty is that she'll be creating drama for anyone around her. What kind of environment would your son be exposed to now during visitation? More importantly, does any of this begin to sound like a flight risk? When they do run out of money, would her custody rights begin to look more like a potential child support revenue stream? You are buying a house. You must be doing okay. Your son just might become more interesting to her.
Wish the best for her and who ever she may be with; but do all in your power to avoid supporting their fantasy. The further away she is, the more she may imagine she misses her son. She may start thinking if she had custody, her life would somehow be better.
Prepare. People have legally signed away custody rights for the price of a used car and a tank of gas. Start saving. Explore all legal options. And keep adoring that wonderful son.
