Let me just share with you a true story about what happened to me in a similar situation.
About 12 years ago, I was discussing with a co-worker, my plans for a getaway weekend at WDW.
I am a Florida resident and at different times throughout the years, they offer various FL resident deals for park admission. My co-worker told me that he and his wife had only used 2 out of the 3 days on their "Play 3" tickets that were about to expire. He gave them to me and said that it would be a shame for the one unused day on each ticket to go to waste since they weren't planning to get to WDW anytime soon.
I thought it was perfect since I just needed 2 days of admission, I qualified as a FL resident and never gave it a thought that it would be against the rules. Also, they had just started using the finger scanners for AP's and FL resident tickets. It was common to use someones partially used tickets years ago, before finger scans.
Then the drama started.
I got to the gates of DAK, inserted the ticket and did the finger scan, it rejected. The CM had me try again, rejected again. CM looked at the ticket and asked me if I was Michael. I went into panic mode and lied, I said "yes". She asked me for ID, I lied and said I didn't have any with me. The CM called a supervisor who looked at the ticket and asked me again for an ID. When I lied again and said I didn't have it with me, the supervisor CM asked me a few more questions which I couldn't answer. Finally, she said, "then I guess I can't help you here", flashed the ticket at me and turned around and walked away with it. The gate CM told me that I would have to please step away from the gate and I was totally humiliated, mortified, embarassed and every other word you can think of!
I consider myself lucky to have gotten off so easily and that I'm not banned for my stunt. I take full responsibility for being a nitwit and not being fully informed about the non-transferability of ticket media. Now, I keep an AP and I am never annoyed if they ask me for ID.
Willa, I hope your daughter does not try to use someone elses AP.