i feel like he'd sort of see a lot of himself in that? he's the same way with just jetting off to wherever and though he's grown out of it a tiny bit he would totally get it. he also has 4 sisters already, but i could definitely see him kind of thinking of her in that light too. he'd probably be a bit protective of her and would make it more than well known that if she ever needed anything, especially if it was help in some other country, all she had to do was let him know, no questions asked.