Of course, if you are going to do this, you should clear out the group of enemies before that boss so she doesn't get caught up in fighting them. Therefore, it should be possible to bring her along for assistance to the nearby Corrupted Monk fight.
Mibu Village: Found after Large Blossom Tree area, by taking a right turn from the Water Mill Sculptor's Idol.Where to find O'rin of the Water in Sekiro? This means they require at least 2 Deathblows in order to kill, they are generally much more difficult than normal enemies, and they drop some of the best loot in the game. Mini-Bosses are special Enemies that are uniquely named, and have 2 or more health bars.
This Complete O'Rin of the Water Mini-Boss Guide gives you strategies on how to beat O'Rin easily, as well as tips, tricks and lore notes. O'Rin of the Water (水生のお凛, Mibu no Orin) is a Mini-Boss in Sekiro: Shadows Die Twice.