Maria knew that it would be quite disturbing for most people to see a man having a weird fetish by beating and suppressing his wife.
But Vernon wasn't part of that 'most people.' He was also part of the Gray family. He had the same blood as Vaughn Gray and his predecessors running in him, so he must've developed the same fetish as his father and Big brother.
"If he doesn't like what Vincent is doing, he shouldn't have that kind of reaction," Maria assumed. "He should be indifferent at least."
Maria had a few assumptions in her head. One of them was;
"Judging from his reaction, I think it's safe to assume that Vernon has something with Chloe, maybe a childhood crush? I remember him as a little kid being so sticky with Chloe at many parties hosted by the Gray family," Maria guessed. "Is it only a childhood crush, though? I feel like there's something more…."