She and Neville took any opportunity they were given (at the end of the day, when the majority of their work was over and they had been dismissed) to put the manor behind them even if for an hour, and take refuge in the forests surrounding the place. There, their time was their own, and they spoke and acted without (much) fear of being watched or repercussion, for they knew that the Dark Lord didn’t care what they did on their own time as long as they didn’t break his rules.