It was Arkwright to whom she must be fair.

It was Arkwright's sorrow that she "could not help--now." Naturally, with these tools in his hands, and aided by days of brooding and nights of sleeplessness, it did not take Bertram long to fashion The Thing that finally loomed before him as The Truth.
He understood it all now.

Music had conquered.

Billy and Arkwright had found that they loved each other.

On the day after the operetta, they had met, and had had some sort of scene together--doubtless Arkwright had declared his love.