For the most part the Mexicans I’ve met have been friendly in the small towns. Mexico city is like any other big city and the people are not too firdly as they hurry themselves along. The tourist towns it is hard to trust the younger men. The women are trustworthy but you should speak Spanish. I would be VERY careful in Mexico City. Safety is not something to take lightly there. You will be OK in the city square, the federal district, and a couple blocks away. Once you’re more than a few hundred yards out you’ll see a dramatic drop in people, more graffiti, and walled houses everywhere.
I no longer go to Mexico. I use to go there monthly when I lived in Texas but am protesting because of their immigration violations and the robbed a friend of mine last time he was there. Unless she has a trusted local guide and real business I would not go there.
BUT, if she must go. Don’t give anything to the children selling items on the street or give them money. They are run by thug street gangs when they should be in school. If she is going to buy things on the street the asking price is never the paying price. It’s very fun haggling with the street vendors. I never had a problem with the water in the cities but maybe I just have an iron gut. But bottled water is cheap and worth the price. One of my favorite things at the restaurant or bars is a big beer in a styrafoam cup with a plate of limes and chili-salt powder.
Good luck.
Thank you for the information. Eh, she wants to/”must” go...it is a wedding...bride is from Mexico City, family lives there, so of course wedding is in Mexico city and it will be quite an extravaganza. I am must concerned about daughter’s safety...Eh, we live near Chicago, so safety is always a concern.