Trying to use this quote in an essay, please can you help shorten it and define what Lady Macbeth is saying. What part should I use to show she reaction to the thought of killing Duncan

That tend on mortal thoughts, unsex me here,And fill me from the crown to the toe top-fullOf direst cruelty! make thick my blood;Stop up the access and passage to remorse,That no compunctious visitings of natureShake my fell purpose, nor keep peace betweenThe effect and it! Come to my woman's breasts,And take my milk for gall, you murdering ministers,Wherever in your sightless substancesYou wait on nature's mischief! Come, thick night,And pall thee in the dunnest smoke of hell,That my keen knife see not the wound it makes,Nor heaven peep through the blanket of the dark,To cry 'Hold, hold!'