Hey powayred! We definitely want to help you do something sweet for your wife! Where's the hang up - is the J7 not letting go of the device, or is the device not unpairing from the J7?
I was able to grab these steps from the J7's User Manual - can you give this a shot?
Delete a Paired Device (Unpair)
When you unpair from a Bluetooth device, the two devices no longer recognize each other. To connect again, you have to pair the devices.
1. From a Home screen, tap Apps > Settings.
2. Tap Bluetooth, and then tap On/Off to turn on Bluetooth.
3. Tap Settings next to the paired device, and then tap Unpair to delete the paired device.
Just checking in here to see if you were able to get the device successfully unpaired from the phone?