The issue isn't what you have said so far Mili, it's how you will react to her reply. Have you thought what tact you will take next if she says.

"Look I am really sorry, I did say that and shouldn't have. I apologised to Vincent today"

or

"He must have misunderstood me as I didnt say that at all."

I am always thinking one step ahead to the next aspect so I am prepared for any response. Nothing worse than being caught off guard.

Good luck

If she says something like:

"I am sorry, I dont recall saying anything of the kind. By the way Vince has been acting up a lot lately is everything ok at home?"

Just hit her with your handbag and make sure you have a small brick inside it first.