Realizing that if she blacks out even for a moment, she'll lose control of the detonator, Kacela does withdraw...backing swiftly up and turning the corner to get some cover. There she collapses her lightsaber and takes a moment to collect herself...checking her injury and calm her body's frantic reaction to it.
(Moving back behind cover, taking Second Wind, and using her action to get advantage on check to overcome Reeling: [roll0] or [roll1])