My DSis is about to go into hospital for some surgery. She's a single mum and asked me to take my DNephew (12) to his football competition the weekend after her surgery. She gave me a lot of notice and I agreed.
The competition is in another city and we have to get three trains and stay over for two nights (the tournment is over two days). I also need a ticket to get in. I went to this tournament for the last few years when his mum was there too as support and we split all the costs so I assumed we'd do the same this time.
The event is about 6 weeks out now so I'm booking tickets, hotel is already booked (to be paid on arrival) and my Dsis has just said "I feel bad that I can't pay anything towards this. You're being such a great auntie, thank you" as she left my house.
She's been off work sick (hence the surgery) so I know things are tight but it's going to cost me ~£350. That's not including spends while there. I was not expecting this. I know its my fault I didn't check we were splitting costs but we've split them the last two years we've gone? She's also said multiple times that she was going to pay for my ticket to get in (as late as last weekend!)
I'm thinking of messaging her to say "what did you mean when you left? I thought you were paying half?" but I don't know whether I'm being UR given that she won't be there and that I didn't check in advance we were splitting costs. I also feel awkward and don't want my nephew to suffer - he's so looking forward to it.
How would you handle this?