"What if there isn't time to call for help, though?" Ezra presses. "What if I have to do something right then?" Technically, that hadn't been the case this time, but there have been times before where time wasn't a luxury he had. The comforting squeeze assures him that Qui-Gon has forgiven him, but still. But still. Something like this could happen again in the future, and he doesn't want his teacher to think he just didn't listen.