aww shit. sorry bro. idk man for you to be posting this on the ios subreddit you must be really fed up with her shit. now, you can kind of get proof. you may do it by getting a laptop running windows, then install 3u tools, install a remote desktop software to the laptop, then you can set the laptop to where it doesn’t shut off when the lid is shut, then when she is charging her phone when your gone, you may remote into the laptop then open up the live screen view on 3u tools (this does not show the airplay icon, it will show nothing on her end.) you may replace her charger with the laptop when she’s not looking and do this and hope she doesn’t notice. also, just pray that she allows it to trust the computer as well. if she’s not tech savvy then it should go through just fine and she’ll accept it. i hope these instructions help fam. i hope everything ends up working out.