So, one day I casually ran a damp cloth over her back. She wasn't sure she liked it, but the second time I did it, she "got it." Through the past weeks when temps were over 100, I took a pan of water out to her and soaked her, literally soaked her. Now she will lie on her back and let me rub water onto her tummy, her throat and face, and even her arm pits!
Below are photos from her most recently "bath."
And...if the soaking doesn't cool her off completely, she enjoys the comfort of
my air conditioned laundry room. This cat is no dummy.