I imagine the biggest complication will be assessing different color vinyl options and measuring how effective those different color combinations look in context of the outer artwork - then deciding on final combinations/ variants prior to manufacture.
Once that is decided upon, she is then at the mercy of whenever different vinyl pressing plants can fit the physical manufacture of the album into their overall production schedules.
It’s unheard of to not have one global release date nowadays and that requires a lot of communication and co-ordination across different territories (at least the U.S, U.K and Central Europe).