1．  With her sisters she was educated at home, and passed her life very quietly, cheerfully, in the doing of small domestic duties, to which love lent the magic lamp that makes all things beautiful.

Is the red part a idiom or else ? How to understand it ? 《文》117

2．Her style is easy and effortless, a perfect example of what De Quincey meant when he said that we should have to turn to the prose of the cultivated gentlewoman for English uncorrupted by the slang and cant of the world.    “her” refers to Jane Austin

Please analyze the structure of the blue part.  What does “for English uncorruped” mean? 《文》118

3.       Jane accepted this news at face value and believed that her friend Caroline was telling her gently that her brother loved elsewhere, and that she must cease to hope.  “this news”refers to that Bingley will marry soon

What does the red part mean? 《文》120

4．Hoping to marry her own daughter to Darcy , she had charged down with characteristic bad manners to order Elizabeth not to accept his proposal.    She refers to Lady Catherine, she had heard it rumored that Darcy was engaged to Elizabeth.

I looked up the dictionary, but didn’t find the phrase”charge down” Is this a phrase or something else?   《文》124