My best guess would be that it was restaurant food. Most food cooked in restaurants is loaded with fat. It's why it tastes so good. The problem is that even if you dose appropriately for carbs, that fat eventually converts to glucose, hours and hours later. So you probably gave her enough to cover the carbs, but you got hit with fat spikes. It's one of those things that you learn how to manage better, the more you do it. Just trial and error.
I wouldn't worry about the insulin unless it was really stored in the heat (like in a car). If it was simply in your bag, in the frio, it's fine. Insulin is far more stable than you'd believe. In just under 9 years, we've really only had one vial ever go completely bad.
I know those numbers sound high, but I assume you're correcting them, but I imagine they're just bouncing back, right? Sometimes stress (even good stress from travel) and the highs that come with it, can cause an increase in total insulin needs that never really go back down to what they were, especially in a honeymooning child. It's normal. You see the same thing often when kids get sick early on. Their insulin needs go up during the cold but never quite come back down again. So you could just need an overall increase across the board. I'd give it another day to level out and then maybe put a call into your doctor to have them adjust, unless you're comfortable doing it.
