I don't know, and I have never heard of this.

If you want to take care of her, take her to the vet.

Could you be a bit more descriptive, like when, how often, etc., does
this happen; what do you mean by "shakes," etc.? And is it possible that
she meows when her head shakes as opposed to the opposite)? If the
shaking causes the meowing, I'd think something like seizures.