While I do like the Babs-Steph dynamic, I can't help but wonder what would happen if Charlie just happened to bamf into the cave at that particular moment. She'd see Babs mentoring a teenage crimefighter-- a burden Babs couldn't be bothered to shoulder when she foisted Charlie on Helena, and worse, wearing the costume Barbara had forbidden Charlie to wear.
Steph may thirst for justice, but it's not DAAAAAARK VENGEANCE!