“That sort of cavalier attitude is what directly leads to intermarriage.
Hey, she thinks she’s Jewish, she self-identifies as Jewish, so what’s the big deal. Let’s treat her as a Jew and if later a real Jewish man married this gentile woman, why sweat too much about it.”
Why don’t you try and get married through any Chabad Rabbi and see their very thorough process of Birur Yuchsin and Yahadus. I’ve heard from a Shliach that he has to turn away majority of couples looking for him to be Mesader Kiddushin due to lack of proof of their Yiddishkait. Why don’t you go and learn Hilchos Yuchsin like we do, instead of spewing your Motzi Shem Ra on the internet?