If you have gmail (if not make an account) for free you can use Google's location history and/or device manager.
Location history gives you ongoing history, you just need to refresh the page to get a new location. For the most part it's pretty reliable & seems to get a satellite refresh no more than 5 minutes later.
Device manager is a one time shot, tho you can keep it going with refreshing the page. Because this is the big boy that will find your lost phone, ring the phone to be found, lock the phone or wipe the history...for whatever reason it's GPS is much more accurate and timely.
Good luck and thanks for wanting to put your wife at ease
ETA: I forgot to add: Because the location history isn't an automatic minute to minute history, if you haven't received an update for awhile, you are better off then confirming the loc with the device manager. May and October are notorious months for sunspot activity which messes with satellite communications. As a for instance, all was going this well this am until approx 7:07...it's now 7:48 and no new location. When I go to check, say a couple of hours from now all those timestamps & locs should be there, it just seems like a product Google doesn't give as much priority to.
If I was really, really worried about it, there are sites out there that give you times on solar flares, etc....but nah, the device manager is working just fine thank goodness.
[This message edited by oldtimer97 at 9:52 AM, May 20th (Tuesday)]