What does “succumbed to the prostrating power of her destroyer” mean?

'It reflects Madeline's condition soon after the narrator's arrival.'

Explanation:

The given quote 'succumbed to the prostrating power of her destroyer' has been taken from 'The Fall of the House of Usher' authored by Edgar Allan Poe. It connotes the change in Madeline's condition after the narrator's advent. After seeing narrator, her condition deteriorated as she was not able to withstand her affliction and indisposition and perished(as reflected through the quote 'succumbed to the prostrating power').

mailman is the most possessive answee

its hard for me to see which word is supposed to be in bold. if i knew then i would be able to better.