Found!
I read Jackie-O’s comment and decided to call Sheila’s cell phone one last time before surrendering to the will of Tyrone. Lo and behold, she answered! She sounded hungover, and I distinctly heard Sesame Street in the background, but she scheduled me for Tuesday evening at her new new place.
The location of the new new place? The same salon where my mother has been getting her hair highlighted for ten years.