"The 40-year-old woman had a pre-existing defect in the base of her skull (the bone at the top of the nose) and a sac of brain tissue had protruded out into the nasal cavity. This is a rare condition that we see in neurosurgery and in ear, nose and throat clinics."
https://theconversation.com/no-you-cannot-pierce-your-brain-...
Edit: Different woman, but likely a similar root cause.