Dude it sounds like she needs a lot of years to grow up and she cares about you far less than she just cares about what a relationship with you can give her. She'll probably just break up with you after you pay for her Disneyland escapades. Sometimes you just have to realize that some people are selfish and no matter how much you love them they do not have the capacity to love you back.

There are literally kids in third world countries playing with trash and starving to death, trust me I've spent a lot of time in developing countries. If you need to make someone's dreams come true then you could send that Disney money to an NGO and help feed, clothe or provide toys for children that need it rather than paying for some spoiled, selfish woman to go to Disneyland.