I found out another glitch, Once the hag sees you on the stairs if she's on the other side of the room she goes up the right stairs (or left if your on the right) Then she continues to go up and down.
Ah right, so the way the Hag is programmed she tries to cut you off at the stairs rather than going straight after you. I might work in a fix where you can't just leave her pacing like that if you camp on the stairs.
Im not sure what youre talking about with "Usex64", where did you see that?