If her worldview was wrong and all existence was pointless, what would be the point in giving up her worldview since all views would be equally pointless? If existence is pointless, then so is your question. Why would anyone labor to answer a pointless question? If the universe has a point then your question is irrelevant (again pointless). There must be a name for this fallacy, but, if there is, it escapes me. Maybe it is so irrational it has no name. (The fallacy of the pointless point?)