Sharing activity not showing friends activity

Hi

Your friend may have stopped sharing or hidden her data. If she has not done so, check that you are each following the instructions here, including under the heading "Get help with Activity Sharing":

Share your Activity with your Apple Watch - Apple Support

If you have not yet done so, check that you have each updated to the latest software on both your iPhone (as you have done) and Apple Watch:

• Update the iOS software on your iPhone, iPad, or iPod touch - Apple Support
• Update the software on your Apple Watch - Apple Support

If the issue persists, it may help for each of you to unpair and re-pair your Apple Watch:

• The Watch app on your iPhone takes a backup of your watch automatically when unpairing via the app. Choose to Restore from Backup during set up. Most data and settings will be restored, with some exceptions (eg Apple Pay cards, passcode).
• Unpair your Apple Watch and iPhone - Apple Support
• Set up your Apple Watch - Apple Support

I had the same issue. I eventually ended up calling up Apple support and the last thing we did was have me sign out of iCloud, restart my iPhone, sign back in to iCloud and it started working again. I hope it works for you too.