Queen Elizabeth: Have her then, but you're a lordly fool: she's been plucked since I saw her last, and not by you. Takes a woman to know it.
Halfway into the film, Shakespeare is holding Viola's face placing his hands around her jaw, looking closely at her. When the angle is behind Viola, we see that her hair gets caught around his left hand's fingers. The angle changes to a wider side angle and his hand has no hair around, even though he hasn't moved it at all.
The young boy in the film is John Webster. Webster himself became a famous playwright in the 1600's; his speciality was writing gruesome plays foregoing the love and tenderness of Shakespeare and Marlow. Could this be why we see his character feeding the mouse to the cat?