Hi PaulSG,
We appreciate you reaching out to us.
We’d like to gather additional details that may help us be in a better position to assist you.
Have you had the chance to restart both devices? Restart your iPhone - Apple Support
If you haven't, please check for a software update and make sure that you are running the latest version of iOS.
While it isn't inherently assured that an update will resolve the issue, updating to the latest software version for your device can help isolate potential software issues.
Kindly secure a backup and update.
How to back up your iPhone, iPad, and iPod touch - Apple Support
Update your iPhone or iPad - Apple Support
And then, share the steps below to your wife.
- "Open the Find My app and select the People tab.
- Tap the Add button
. - Select Share My Location.
- Enter the name or phone number of the person that you want to share your location with.
- Select Send.
- Choose to share your location for One Hour, Until End of Day, or Share Indefinitely."
You can use the article below as a reference.
Share your location with your family - Apple Support
Take care!