"Having friends help, especially when they've been here for a while to get the lay of the land." Of course, Arthur had made it harder for her by ending up with a meth addiction, but they'd gotten through it and ended up closer as a result. Ariadne also completely understood why he'd ended up addicted to a mind altering drug, so she was grateful for every day they put between then and now.
"What's your world like? If you don't mind my asking, of course." She'd completely understand if Tauriel didn't want to share.