Didn't the subway cat, when she was living rent-free in her mother's deluxe luxury duplex, own a boa constrictor or two that she didn't always keep in their cage?
That, and the ghastly-looking people who dropped in to visit and even live, compelled her aged mother to flee the duplex and to seek refuge with one of her other daughters. When her mother and sisters sold the duplex and jammed the subway cat into a halfway house, despite the subway cat's whining, it was justified and long overdue.
The subway cat's also had cats and kittens, one or the other which mysteriously disappeared about the same time the boa constrictor(s) developed a pot belly.
When the subway cat was taken away, the boa constrictor(s) and surviving felines were given to the veterinary to be put down.
This is all true, because the subway cat herself at various times confessed to it. If she denies it then, she's lying.