Because she was treated like a ranch hand and expected to work on the farm and she wasn't really given any freedoms for her first marriage and her second marriage started off good but her husband later became abusive beating her and calling her names. Neither of these marriages she could really leave because she wouldn't have anywhere to go and once she did then she left.
The fights between Mercutio and Tybalt and then between Romeo and Tybalt are chaotic; Tybalt kills Mercutio under Romeo's arm, flees, and then suddenly, and inexplicably, returns to fight Romeo, who kills him in revenge. Passion outweighs reason at every turn.
Victor Frankenstein creates a creature (he is never given a name, and so therefore it is wrong to refer to him as "Frankenstein") who learns two ways about humankind. While the creature hides in the hovel attached to the home where the De Lacey family is living, he learns language.
