SARAH: Now things really begin to get tense. Gertrude has had enough. Her line implies that she is about to leave, perhaps to go find Claudius and bring him into this conversation - someone whose authority Hamlet will have no choice but to obey.

RALPH: But Hamlet won't let her go. He forces her to sit down, and orders her not to move until he's shown her what she's really like.

SARAH: Remember, Hamlet has been pretending to be crazy. So, now that he's become angry and rude, and potentially even physically violent, Gertrude is quite understandably frightened. She cries out for help, thinking that Hamlet might do something rash - and indeed he does.