Kind of an interesting premise.
Humans thinking they're a better species because (most) beastmen apparently can't use magic, so they don't believe our FMC and think she's making it up.. even the guild scoffs at it saying that even as a sage, she's got no magic to be able to use magic.
I'm finding it amusing that all of the cat magic is just... common things that cats actually do, and the effects follow suit with their behaviors.
Looking forward to the identity shift, and to learn more about this grandkid.
Thanks for the chapters, this was a neat find and I'm looking forward to more!