Question Author
My apologies, I omitted to supply the preamble. Here it is:
Preamble: Ten clues contain an extra word, which should be removed before solving. In order, these give a statement by one person that applies to their relative’s treatment of another, APPARENTLY. All other clues contain an extra letter, to be removed before solving. In order, these spell out what must be highlighted in the final grid (28 cells). Chambers Dictionary (2016) is recommended; 30 is in Collins.