If you want my advice, you didn’t really ask for it per se : one get a relationship counselor now. Number two get a financial advisor now.
Both of you need to be going to both of them. This is going to become a problem.
She might be excellent in all of the regards as you said in a comment already. But this is going to become an issue when your bill $10 and hers is 80 and she won’t stop doing it. This sort of situation doesn’t get better. It tends to get worse. It starts with the food and it goes from there.
Because even if you’re only going out once or twice a year newsflash my friend once you’re married, she’s going to be going out with her friends and that bill is going to get big and it’s gonna get big really really fast.
So I would say marriage/relationship counselor, and financial advisor.