Zuri

In an attempt to force the Worg away from Aetus, Zuri steps up to it, hold out her hand and a thunderous boom erupts, knocking into the great, ugly beast.

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She moves one square up and one to the right and casts Thunderwave, DC15 CON save or (2d8)[9] damage and pushed 10' away, hopefully saving Aetus from needing to disengage. Save for half and no push. Could you resolve this before Aetus goes so he knows what he needs to do.

Thunderwave

Evocation

Level: 1
Casting time: 1 Action
Range: Self (15-foot cube)
Components: V, S
Duration: Instantaneous

A wave of thunderous force sweeps out from you.
Each creature in a 15-foot cube originating from you must make a Constitution saving throw. On a failed save, a creature takes 2d8 thunder damage and is pushed 10 feet away from you. On a successful save, the creature takes half as much damage and isn’t pushed.

In addition, unsecured objects that are completely within the area of effect are automatically pushed 10 feet away from you by the spell’s effect, and the spell emits a thunderous boom audible out to 300 feet.