Unless I saw that she used a "wipe" after immediately leaving the restroom I'd always have the incident in the back of my mind. I'm a huge germaphobe and wash my hands till they're raw sometimes...not all at once, but sometimes, depending on activities throughout the day, much hand washing (in my opinion) is needed.
A man died in the town next to mine a couple of years back. A family made potato salad for a church function and one of the ladies making the salad didn't wash her hands after using the bathroom. After an autopsy was done and testing of food, it was shown that the potato salad contained bacteria that would be present only through inadequate handwashing after having a BM. Wow!!! So, for the people who think skipping handwashing is no big deal, it sometimes can be a "deadly deal".