In macbeth what quotes does it show lady macbeth regrets helping macbeth kill duncan? 10 easy points?

Well at the end she does have fits of sleepwalking in which she discusses the regret she goes through due to her involvement in his murder. An exact qoute is "What's done cannot be undone." When they first try to kill Duncan she says she can't because he looked like her father. This shows that she does have a conscience and is aware of the wrong in her actions.