Analysing - extract four

Yaxley's Cat by Robert Westall

In this extract, a mother and her two children are in a cottage which needs quite a bit of tidying up. Her young son has succeeded in getting an old water pump to work.

quote
Timothy, who was practical like his Dad, had discovered a drum of paraffin in a lean-to, filled the oil-lamps and got them going. He used more paraffin, in a careful calculating way that brought her out in a cold sweat, to get the fire in the kitchen range going. He had also got the water-pump over the sink to work. At first it had only made disgusting wheezing sounds, but Tim had poured water down it from a butt in the garden, calling it "priming the pump" very professionally. At first it had pumped evil rusty red stuff, but now it ran clear, though Rose had visions of outbreaks of cholera and typhoid, and hurried dashes to the hospital in Norwich, and how would you ever get an ambulance up that path, but if you boiled all the water . . . Now he was winding up all the clocks and really getting them ticking."
Question

Look at the sentence beginning At first it had pumped evil rusty stuff.... How does the sentence structure create an impression of uneasy thoughts rushing through Rose's mind?

It uses quite a few conjunctions ('and' and 'but').

It is long/a list of possible problems.

It breaks off at the end with dots (ellipsis) rather than a full stop – making it seem like there are even more problems not already mentioned.

It is made up of a series of short sections which are only loosely connected – this makes her thoughts seem disorganised.

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