As she herself had said: 'Thyrza was not easy to understand,' but she did understand that the girl's essential motives were of a kind radically at enmity with her own.

Thyrza, it seemed to her, was worldly in the most hopeless way.
'You'll be sorry for it if you're not firm,' she remarked.
Lydia made no direct reply, but after a moment's musing she said: 'If only she could think of Mr.Ackroyd!' She had not yet spoken so plainly of this to Mary; the latter was surprised by the despondency of her tone.
'But I thought they were often together ?' 'She's only been out with him when I went as well, and last night she told him it was no use.' 'Well, I can't say I'm sorry to hear that,' Mary replied with the air of one who spoke an unpleasant truth.
'Why not, Mary ?' 'I think he's likely to do her every bit as much harm as Totty Nancarrow.' 'What _do_ you mean, Mary ?' There was a touch of indignation in Lydia's voice.

'What harm can Mr.Ackroyd do to Thyrza ?' 'Not the kind of harm you're thinking of, dear.

But if I had a sister I know I shouldn't like to see her marry Mr.Ackroyd.

He's got no religion, and what's more he's always talking against religion.