My sister is 6 years younger, so quite an age difference. We live in different countries. I'm married with kids, a mortgage etc, she's flatsharing with a friend and working casual hospitality jobs after finishing university a couple of years ago.
She's staying with us for a month over the Christmas holidays. We offered to pay half of her flight over here (long haul so expensive) - we like her seeing the kids, and obviously like seeing her too, and she has less money than us so it seemed like a nice thing to do (plus nice big sister thing to help with).
My AIBU is, am I unreasonable to get a bit annoyed that she doesn't then offer to pay for things once she's over here? She'll happily let us buy the groceries, meals out, and won't instigate paying for things unless I say 'right, I think it's your turn!' Which I hate doing. But is it infantilising her to pay for everything for her, or should I suck it up being the older sister? She's mid twenties. I'm on unpaid maternity leave and although we are alright financially (and definitely more stable than her), we don't have much spare cash at the moment. The flight contribution was a stretch.