In Terminator 2 Judgement Day, Uncle Bob(Arnold) says it can't self-terminate. In Terminator 3: Rise of the Machines, we see a mushroom cloud when Arnie tosses its' damaged power cell and the cell explodes. T3 Arnold later contradicts the Terminator in T2 when T3 Arnie self terminates itself and the Terminatrix with T3 Arnie's second power cell, so we know Terminators can self-terminate to accomplish their mission. Was there an in-universe reason why the Terminatrix didn't destroy itself by exploding its' own power cell when Kate Brewster, the last of John Connors lieutenants, was near by? Was there more to the Terminatrix's mission than killing John Conners lieutenants?

In Terminator 2 Judgement Day, Uncle Bob(Arnold) says it can't self-terminate. In Terminator 3: Rise of the Machines, we see a mushroom cloud when Arnie tosses its' damaged power cell and the cell explodes. T3 Arnold later contradicts the Terminator in T2 when T3 Arnie self terminates itself and the Terminatrix with T3 Arnie's second power cell, so we know Terminators can self-terminate to accomplish their mission. Was there an in-universe reason why the Terminatrix didn't destroy itself by exploding its' own power cell when Kate Brewster, the last of John Connor's lieutenants, was near by? Was there more to the Terminatrix's mission than killing John Connor's lieutenants?