Austin was unclear about what Monica was, he only knew that the black cat was a problem, it couldn't be chased away or thrown out, even if killed, it would return home unharmed the next night.
Besides that, the black cat did not display any other abnormalities; it had a good temper and allowed itself to be petted without resisting.
Moreover, it was extremely homely and wouldn't run away even if it was free to roam.
Therefore, Austin never fed Monica, it was always Megan who took care of her, including Veronica; everyone liked Monica very much.
Willie, who often came to play with Veronica, Chris, who was invited by Veronica to have afternoon tea at her home, and even Wayne, who had joined the family, all expressed fondness towards Monica.
Even Austin himself, although he was aware that there was something odd about the black cat, couldn't help but want to pet it occasionally.