She only uses a phone for everything, so checking on a computer login is not easy to do.

Yes, it will reroute her to the worst possible wat to get somewhere, while mine will be direct. At first I thought she had bus or walking enabled, but it is set on car, and we have same route settings. I don't understand it, unless the google algorithm looks at your driving history or something like her phone GPS satellites used are different and somehow location info is different--even though the car tracks on the street possible.