The Doctor tells Ryan and Graham to go upstairs to check the rest of the cabin, but then Ryan and Graham find Hanne in the wardrobe hiding - the Doctor and Yaz run upstairs to find Hanne upstairs. They all say something and Graham says he has a sandwich... the next shot is downstairs in the kitchen and them talking. Then Hanne feels her way to the sink - the Doctor says something about are you blind to Hanne and everyone is then surprised/shocked.
Now here is the question, how did Hanne go downstairs to the kitchen/dining area and not give away that she was blind? Throughout the whole episode she is feeling her way through to get to somewhere she needs to go... did I miss something in the episode?