How to prevent iPhone from receiving info from another device?

I once connected my mother's iPhone to my iTunes account to add music for her. Now that some time has passed and I no longer have access to it. Now that i'm using my current iPod it is somehow connected to my mothers iPhone. She now receives my reminders and calendar posts whenever I add them to my Ipod. How do I stop this?

P.S We live in different cities and this is still happening without my computer ever having connected to her iPhone.

NO BLUETOOTH

You probably associated her phone with your AppleID when you loaded the music. That same ID is on your iPod so that's why reminders and stuff are linked. Your AppleID needs to come off the phone. Settings > iTunes AppleStore. Select the ID and log out of it. You might have to give her your password to do that. Also, make sure the iCloud settings are cut off from that ID on the phone too.
Best luck.

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