is this the only issue u are experiencing right now ?? if so my first guess would not be that anything was wrong, that she is just simply a light sleeper and getting fustrated that she has woken up before she was ready.
have u tried those little wedge things , maybe they would help position her in her crib better and keep her from rolling so much ??
best of luck!
Welcome to the board! Sorry to hear about the trouble you've going through recently.