"She doesn't just drink Oni's Smile. Any alcohol she can get her hands on, she'll drink it," The Daimyo mentioned after Keiji found the Oni's Smile. He would be able to see other brands of alcohol here on the floor as well. From "Kirin" to "Kappa River" to "Oni's Smile", all kinds of alcohol were found, and drunk, here. 

When he asked about how much trouble the woman would be, the Daimyo looked to the side and he commented "Depends on your definition of...'trouble'. Suffice to say, as long as you don't try and strike her, she won't try and strike you," 

He kept leading Keiji through the cellars until finally...

"Ah. There she is," 

He points towards the shadow that leaned against the back wall. The figure was small, and it seemed to be in a crossed legged meditative pose, with the forefingers and thumbs forming circles while the rest of the fingers fanned out. The hands rested on the knees. 

The Daimyo stays back as he lets Keiji approach.

When the light reveals more about her, Keiji would see that the figure is a halfling. An elderly halfling with white scraggled hair. She wears tattered and dirty robes. When he gets closer he would be able to hear...snoring coming from the halfling, as well as a snot bubble that increases in size with each exhale and decreases with each inhale.