Did She Stray Like Old Times In The Car

A couple of years ago, we went out with my wife’s work colleagues for New Year’s Eve.
I was the designated driver so I was sober.
My wife and her workmate and another women were in the back of the car while the husband of one of them was in the front passenger seat with me.
All of them were very drunk.
When we arrived to drop them off at their house, I put the inside car light on and the woman’s husband next to me had his hand up my wife’s skirt.
I Said what the fucks going on… he said nothing as he got out of the car together with his wife and the other woman.
When alone with my wife I said what happened?
She said he was trying it on , but she just held his hand so that he couldn’t do anything!
What I don’t understand is,
1, why she didn’t say anything when he tried it on.
2, when I turned the car interior light on his hand was at the top of her thigh!
She has admitted that she is easy when drunk, and allowed many guys to finger her before me.
so I am now wondering if she let him finger her??
Do you think he did??