Disturbed thoughts Eliot had about her unfinished work (2,3,10)

I believe the answer is:

to the lighthouse

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'work' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

(Other definitions for to the lighthouse that I've seen before include "Modernist novel" , "Work of female author" .)

I've seen this clue in The Independent.

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