Ophelia
SARAH: Now Ophelia turns finally to herself, revealing her own sorrow at having to witness all of this, and in particular because she had been fortunate to receive Hamlet's love — his music vows — in the past.
RALPH: Ophelia's language emphasizes once again the strangeness, or alienation, of Hamlet's situation — he is out of place, his reason has been confused like bells that chime harshly and at the wrong time - and finally, that his handsome, youthful appearance has been "blasted with ecstasy" — he's been thrown outside himself.
SARAH: And she ends with yet more irony — while Polonius and Claudius are trying so hard to see into Hamlet's motivations, to perceive what is causing his madness, and without much success — Ophelia is overcome with sorrow at what she sees. What each character sees in Hamlet depends a great deal on what they're looking for.