My wife went to an event where the majority of the meals, besides the one served to her, were non-kosher. Afterwards, she came home, washed her hands, and rinsed some of our bowls. Do I need to be concerned that non-kosher residue might have been tracked into our kitchen? I worry she might have accidentally touched something non-kosher when she was there.
There is no need to be concerned about this, because you don’t know if she touched them, and even if she did, it was a minute, insignificant amount, and not problematic.