I have a name for the casting tradition "LIGO Manipulation". In universe named after the pioneer of this particular method of casting, out of universe named after the Laser Interferometer Gravitational-Wave Observatory.
Ligo's work introduced a method of magically manipulating local gravity to produce specific effects through a thorough understanding of the forces involved and how they interacted along with careful control of the channeled magic through a focus that needed to be adjusted depending on the effect. Since then the practices within the tradition have expanded, some use a similar system of calculation and an adjustable focus to manipulate other forces, chemical reactions, or biological processes.
Carwyn has focused exclusively on methods to alter time, whether indirectly through gravity or directly changing time itself. Expanding her skill set would probably be a good idea at some point.