If I recall somebody turned the CC on for that conversation and it was something about August’s relationship trouble with his dad and if that’s the case, the “Mother Superior” wouldn’t have been lying when she mentioned it to Rumple as well – which made him believe it was Bae and not Pinocchio.
I thought the closed captioning just said they were whispering and didn’t give any actual dialogue, but there’s one part you can make out where she’s telling him not to do anything drastic, or something like that.