This used to drive me crazy during the first PT. Aside from them going into the room and talking about Barnabas, which enabled PT Hoffman and Angelique to learn about him, since Stokes kept reminding everyone that it was dangerous for them to be there - and they knew that Barnabas and later Julia had gone to PT that way, I could never figure out why they dared go in the room at all.
So, now we come to this PT and Stokes knows all about it. He eagerly questions Daphne about every detail. But - those details won't tell him anything new about PT - it's really just curiosity and gossip about these people they don't know. And, that interest could surely have been satisfied OUTSIDE of the room. I couldn't believe that they all went in there - he questioned her about all of the details - and THEN warned her that they shouldn't stay in there!!!