This is hopefully the last page of the "magic English pill" woman saga in my life. I'm happy to say that I never taught her and will never have to teach her again and it again happened without my looking like the "bad guy".
This student was scheduled for a lesson on the 7th of November but canceled because she said she caught a cold. She was rescheduled for yesterday, but the agency called to tell me that she hadn't been in touch with them so they couldn't be sure when she'd ever take the lessons she'd requested, if ever. Their phone message said essentially that she hadn't paid for the lessons yet anyway, so they couldn't really expect much of her.
In the follow-up e-mail from the agency about this student, the referral agent essentially said that he didn't feel she was really all there. He didn't say those words exactly, but he did mention that half her mind was on something concrete and tangible and the other half didn't know what it wanted. He also said that he felt that "normal people" couldn't understand what she was thinking and encouraged me to flat out refuse if she were offered to me by anyone else who didn't know her history with both me and the agent.
So, I'm pleased to report that that particular issue is a weight off my mind. I had reconciled myself to dealing with her and viewing doing so as a challenge to my spirit and teaching skills. However, I'm just as pleased not to have to take on this particular challenge.