The marriage between Charlotte and her cousin Karl Ludwig, Elector Palatine, was regarded as highly advantageous. However, it was her own mother who tried to warn the Elector of Charlotte's foul temper.
At first all went well as Karl Ludwig became wildly infatuated with his wife and with gusto started his task of providing the Palatinate with an heir. After all, she was a tall blonde girl, with long legs and a beautiful bust, so that Karl Ludwig could hardly keep his hands off her. According to his sister Sophie, 'his passion had impaired his intellect'.
If Charlotte so much as glanced at another man, Karl Ludwig was jealous. If she criticised him, he would go into a rage but their quarrels were made up at night with audible violence. According to
Sophie, Charlotte was hopeless and stupid. In conversation Charlotte had only one topic: herself. She was a good horse-woman, but Karl Ludwig objected to women on horseback; she loved gambling, which Karl Ludwig regarded as a waste of money.
Charlotte ruined her relations with Sophie when she admitted that she had married Karl Ludwig against her own wishes, she would have preferred several others over this 'jealous old man'. Soon it was Charlotte who became jealous of Sophie who seemed to be on much better terms with Karl Ludwig. Charlotte felt herself excluded from their conversations and never understood their jokes.

To the joy of the Palatinate and Karl Ludwig, a son was born in 1651 and in 1652 a daughter. When Karl Ludwig went to the Electors' Diet in Prague, he infuriated Charlotte by not taking her with him. At this time Louise von Degenfeld came to their court and was regarded as not very pretty and naive, which was as it should be as she was only sixteen years old.
After his return Karl Ludwig took his wife and his sisters, Elisabeth and Sophie, to the festivities accompanying the coronation of Archduke Charles as his father's successor. Charlotte was again
furious as she was pregnant and unable to wear the French dresses especially bought for the occasion. However, the baby when born died a few hours later and Charlotte was very ill and could not be moved for weeks.
In 1654 Karl Ludwig's brother, Prince Rupert, came to visit Heidelberg and soon Charlotte realised Rupert was pursuing Louise von Degenfeld. To prevent nocturnal visits, Charlotte made Louise sleep in her own bedroom. Trying to protect Louise from Rupert, she had not realized that her own husband had fallen in love with the same girl.
However, one night Charlotte woke up and, maintaining that she had found her husband in bed with Louise, she attacked the girl, almost biting off her little finger. Karl Ludwig protected Louise and called in the guard to restrain Charlotte. The following day Karl Ludwig installed Louise in an apartment directly above his own, had a hole cut in the ceiling and with the help of a ladder was able to visit her. Soon Charlotte found out and had to be prevented from ascending the same ladder with a knife in her hand and murder in her heart.
From now on Charlotte maintained that she was kept a prisoner in her apartments. She would beat her servants and, if they were found to be spying on her behalf, were dismissed by her husband. Karl Ludwig made sure not to be anywhere near Charlotte, who was pitied by everyone. According to his ancient powers he divorced Charlotte but kept this a secret until after his sister Sophie's wedding. As soon as these festivities were over, Karl Ludwig published the divorce documents and declared himself to be married to Louise von Degenfeld.However, many questioned the legality of the divorce.
Charlotte then lived in obscurity, only to emerge after the death of Karl Ludwig, in 1680, when their son became the next Elector Palatine. However, she had remained difficult and ill-tempered and, when she died in 1686, it was said of the maids who wrapped her into her shroud that this was a unique occassion as 'It was the first time anyone had dressed the Electress without being beaten'.
 

Source: Leo van de Pas