Unfortunately the heights for the princesses are very strict. I used to worked in "Parade/Character" at Disneyland Paris, and I've known a couple of girls who were a little bit on the short side/a little bit on the tall side. But they would still be within the official "5’3” - 5’7”.
You don't have to give up on being a face character though
! in your height there is Alice, Wendy and Tinkerbell (tink only does parade though). and your height also have really great fur characters.