Juliet's emotional state is conveyed through her choice of words, such as "O serpent heart, hid with a flowering face!", "O, be some other name!", "What's in a name? that which we call a rose by any other name would smell as sweet", "O Romeo, Romeo! wherefore art thou Romeo?", and "Deny thy father and refuse thy name; or, if thou wilt not, be but sworn my love, and I'll no longer be a Capulet."
These words indicate Juliet's frustration, confusion, and intense longing for Romeo. She is torn between her love for Romeo and her loyalty to her family, which is evident in her exclamation, "O Romeo, Romeo! wherefore art thou Romeo?" She also expresses a desire to be free from the constraints of her family name, as seen in her statement, "Deny thy father and refuse thy name; or, if thou wilt not, be but sworn my love, and I'll no longer be a Capulet."
The passage also describes Juliet's physical reaction to Romeo's name, as she "tremble[s] and fall[s] upon her bed" upon hearing it. This physical response indicates the depth of her emotional turmoil and the intensity of her feelings for Romeo.
Overall, the evidence in this passage suggests that Juliet feels a range of emotions, including heartache, desperation, confusion, and longing.