in the short story "Growing Up" by "Joyce Cary" , what instances make Robert feel that his relation with his daughters is changing because of their...

The first instance where Quick feels a change in his
daughters is the lack of enthusiasm for his return. The girls had been in tears when
they missed him, but this time they are unmoved: Jenny lies reading a book, and Kate
sits thoughtfully on the swing. As he realises their actions are not as he expected,
Quick muses on the change in his daughters-

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Jenny… was growing up more quickly than Kate, and
she was going to be an exciting
woman,

He realises that the
fault is his: his expectations of his children have not
altered-

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 Quick was amused at his own
disappointment.

He is more
disturbed by their cruel treatment of the family dog. The girls throw anything they can
at the poor creature to get it to leave, yet Quick sees it is in “acute
misery”

The story becomes more sinister as the girls extend
their red Indian game by attacking their father. He is shocked and hurt by their wild
behaviour-

It
seemed to him that something new had broken in to his old simple and happy relation with
his daughters;

Quick then
seeks to retreat to his club and be in the company of men, planning to return when the
children are in bed.