Hi there
Please try this
Check "Use This Device": Open the Find My app on your new iPhone 18, tap Me in the bottom right corner, scroll down to Location From, and make sure it is set to Use This Device instead of an old phone name.
Toggle Location Sharing on Your Daughter's Phone: On your daughter's device, go to Settings > [Your Name / Apple Account] > Find My, turn off Share My Location for a couple of minutes, and then turn it back on.
Sign Out and Back Into iCloud: Go to Settings > [Your Name], scroll to the bottom, and tap Sign Out. Restart your phone, then sign back in with your Apple ID and open Find My again.
Check the "No Location Found" Glitch: If it says "No Location Found" or shows a blank status for people, a temporary sync bug during device-to-device transfers is common. Toggling Airplane mode on and off or resetting network settings via Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings often forces the secure token to refresh.