“Writing fiction always left me feeling muzzled and constrained,” Jacquelyn Frohlich says on the occasion of the release of her new film, “Wayward.” Wanting more than anything to be “a real novelist” — the type who gets reviewed in the New York Times — this graduate of Fiction Writing at Sarah Lawrence College wrote three unpublished books, got married, had children, got divorced, and decided life was neither complicated nor rewarding enough. She took up film, a medium that “offered the joy and relief of collaboration.”