Abnormal Head Impulse Test when turning head to right

This woman had vertigo and spontaneous horizontal unidirectional nystagmus to the left. Her HIT is normal when turned rapidly to the left. It's has a fairly obvious refixation (or catch-up) saccade with her head turned rapidly to the right. She screened negative for central features, and had no vertical skew or hearing loss. She had R vestibular neuritis.