Quote 22
JULIET
Is Romeo slaughtered, and is Tybalt dead?
My dearest cousin, and my dearer lord?
Then, dreadful trumpet, sound the general doom,
For who is living if those two are gone?
(3.2.71-74)
For Juliet, the loss of both Tybalt and Romeo seems like the Apocalypse; she expects to hear the trumpet sounding that marks the Day of Judgment.
Quote 23
JULIET
Some word there was, worser than Tybalt's death,
That murdered me. I would forget it fain.
But, O, it presses to my memory
Like damned guilty deeds to sinners' minds:
'Tybalt is dead, and Romeo banishèd.'
That 'banishèd,' that one word 'banishèd,'
Hath slain ten thousand Tybalts. Tybalt's death
Was woe enough, if it had ended there;
Or, if sour woe delights in fellowship
And needly will be ranked with other griefs,
Why followed not, when she said 'Tybalt's dead,'
'Thy father' or thy 'mother,' nay, or both,
Which modern lamentations might have moved?
But with a rearward following Tybalt's death,
'Romeo is banishèd,' to speak that word
Is father, mother, Tybalt, Romeo, Juliet,
All slain, all dead. 'Romeo is banishèd.'
There is no end, no limit, measure, bound,
In that word's death. No words can that woe sound.
(3.2.119-137)
For Juliet, being separated from Romeo is the same as being dead.
JULIET
What's here? A cup, closed in my true love's hand?
Poison, I see, hath been his timeless end.—
O churl, drunk all, and left no friendly drop
To help me after! I will kiss thy lips.
Haply some poison yet doth hang on them,
To make die with a restorative. She kisses him
Thy lips are warm!
Enter Paris’s Page and Watch.
Yea, noise? Then I'll be brief. O happy dagger,
This is thy sheath. There rust, and let me die.
(5.3.166-175)
Juliet does not hesitate to follow Romeo into death. Poison, to her, is like a medicine, a "restorative" that could bring her back together with Romeo. The thing is, there's not enough poison on Romeo's lips so Juliet uses her husband's sword.