Oh but he's a dog, they're usually treated as pets. He assumes he's her type too? In some points at least. . .
An anal addicted mutt, a thick, veiny knot! Not that he only cares about sex, but he's quite useful to be kept around.
Pets are usually adopted, she may do whatever with him!
She doesn't find the idea of controlling a sentient being like as moral . . .
But if he wants a collar and leash, she can get one.