Some of these are not as straight forward as others. For instance, "The vain queen rides not forth". Yes, the vain queen is Cassiopeia but that is only part of the clue. What does it mean by her not riding forth? There was the older clue that included Cassiopeia: "The vain queen rides a giraffe that remembers her daughter's hero".
Two references to Cassiopeia riding (or in this new clue explicitly NOT riding) something. Neither clue 100% clear as to it's meaning.
Cassiopeia could still be riding, just not "forth" (i.e. forward or outwardly). Perhaps referencing a retreat or withdrawal?