But the old woman understood it all.

"She's a sly creature, is Mrs Boyce," Mrs Hearn said to Mrs Dale, before the evening was out.

There are some old people whom it is very hard to flatter, and with whom it is, nevertheless, almost impossible to live unless you do flatter them.
At last the two heroes came in across the lawn at the drawing-room window; and Lily, as they entered, dropped a low curtsey before them, gently swelling down upon the ground with her light muslin dress, till she looked like some wondrous flower that had bloomed upon the carpet, and putting her two hands, with the backs of her fingers pressed together, on the buckle of her girdle, she said, "We are waiting upon your honours' kind grace, and feel how much we owe to you for favouring our poor abode." And then she gently rose up again, smiling, oh, so sweetly, on the man she loved, and the puffings and swellings went out of her muslin.
I think there is nothing in the world so pretty as the conscious little tricks of love played off by a girl towards the man she loves, when she has made up her mind boldly that all the world may know that she has given herself away to him.
I am not sure that Crosbie liked it all as much as he should have done.

The bold assurance of her love when they two were alone together he did like.

What man does not like such assurances on such occasions?
But perhaps he would have been better pleased had Lily shown more reticence,--been more secret, as it were, as to her feelings, when others were around them.