> From what I've read of her in the past she seems to be a pretty damn good developer. But in the open source world those are a dime a dozen

Not exactly. Very few people in recent decades have achieved anything comparable to αcτµαlly pδrταblε εxεcµταblε and Cosmopolitan libc - they're in the category of "that should not even be possible". Of course, Tunney's work doesn't touch Fabrice Bellard in terms of sheer breadth and impact, but they're arguably in the same category.