Any resemblance to wizards from urban fantasy novels who don't actually wear hats in the canon but do on most of the novel covers is entirely coincidental.

Were I vaguely alluding to Rhoda reading a novel series, it would be The Dresden Files, but I sort of expect that whole "doesn't wear a hat in canon but does on the cover" thing applies to more than one character. Hats look good on covers.

Leading up to this, I considered whether Grace would have shown Rhoda a picture of Tedd, and the answer was a definite "no." Not because Grace wouldn't enjoy taking and sharing pictures, but because both Tedd and Grace habitually wouldn't take pictures due to secretive magic nonsense. They're very much not in the habit of doing that.