Ugh, souvenir people never get it, do they? She's probably dropping cash on those overpriced t-shirts or ceramic lighthouses at every stop. Then you're stuck paying more for food and rides because her money's gone on trinkets. How is that fair when you both agreed to split costs? Next time, maybe set a firm souvenir budget before you leave, like fifty bucks max per person. Otherwise, what's the point of even planning a budget if she ignores it?