Earlier quoted context omitted.
I'm curious what YCombinator has to say about that kind of behaviour. Is this a unique case? Has it happened before? How do you prevent it from happening? What's the benefit of being able to say you're a YC founder?
YC already knows the dangers of "co-founders" who don't have a working history beyond getting together for this startup. Technically, it should have filtered her out of the application process.
Why do you say so? Surely that's just one signal among many, and not an absolute indicator of anything?