Why does Linton help Cathy escape to see her father?Why would he allow her to do that when, hitherto, he has always done what his father wants?

Why does Linton help Cathy escape to see her father?Why would he allow her to do that when, hitherto, he has always done what his father wants?

Why does Linton help Cathy escape to see her father?Why would he allow her to do that when, hitherto, he has always done what his father wants?

Why does Linton help Cathy escape to see her father?Why would he allow her to do that when, hitherto, he has always done what his father wants?

It seems to just be a matter of Cathy’s caring personality winning over Linton’s fear of his father. The only line that lets us know what happened is Nelly’s report “She told me that her anguish had at last spurred Linton to incur the risk of liberating her.” Until this point, Linton has been cruel and vicious throughout the novel, including delighting in Heathcliff hitting Cathy so hard as to make her bleed. Yet Cathy is the only person who’s kind to him, and her patience and love gradually breaks through the barrier of his petulance.
Why does Linton help Cathy escape to see her father?Why would he allow her to do that when, hitherto, he has always done what his father wants?