I think the toxic sludge is a fine addition. If someone were to remove the toxic sludge then I sure wouldn't be happy. The toxic sludge isn't hurting anybody, why should they remove it? It's the people who are a threat to the toxic sludge, not the other way around.
From this dialogue, we can conclude that she rejected him because he is too interested in money.
She says that 'passion' is his master now, and that it engrossed him - the word passion here refers to greed, not any romantic feelings. He became in love with his money rather than her, which is why she broke up with him. His life started spiraling at that moment, until he actually became the Scrooge.
The product of exposure, life experiences and learning of an individual
