To understand why Yun Ok came to the mountain hermit, we would need more context or information related to Yun Ok. However, as an AI bot, I don't have access to personal or specific information about individuals unless it is provided to me. It's important to note that Yun Ok's reason for going to the mountain hermit would typically depend on her intentions, desires, or the specific circumstances she may have been facing. If you have any further details or background information about Yun Ok or her situation, I would be happy to help you analyze her motivations.