she would have had to be a much less remarkable woman not to profit

[suprunp]

For, whatever Neil’s reservations were about Darya [Munro's wife], he [Neil] had none about Munro, and she would have had to be a much less remarkable woman not to profit by the enormous admiration he [Neil] conceived for her husband.
(W.S. Maugham; Neil MacAdam)

How would you paraphrase it in plain English? The main idea is understood, but I'm afraid all the intricacies and subtleties may be slightly over my head.

Thanks.

[Raymott]

For, whatever Neil’s reservations were about Darya [Munro's wife], he [Neil] had none about Munro, and she would have had to be a much less remarkable woman not to profit by the enormous admiration he [Neil] conceived for her husband.
(W.S. Maugham; Neil MacAdam)

How would you paraphrase it in plain English? The main idea is understood, but I'm afraid all the intricacies and subtleties may be slightly over my head.

Thanks.

Yes, it is convoluted!
Darya is a remarkable woman, therefore she does profit. For her not to profit she would need to be less remarkable.