Try feeding her.
9 months old is a growth-spurt time... and a time of developmental changes and/or teething. Together, this makes for 'growing-pains' in a baby and it is not easy for them either.
They wake.
All I know is, both my kids as babies had GINORMOUS appetites, and I nursed, on-demand at night, when they woke too, like that.
Also, they get separation-anxiety... even at night. This is per our Pediatrician.
Or, put on white noise,
Or.... Maybe her crib is NOT comfortable?
In our kids crib, we had a Fisher Price "Ocean Wonders Aquarium" crib toy. They loved that and would play with it and turn it on themselves.
ALSO... if baby is in your room... maybe someone is waking HER up... with their snoring... and sleep noises???? This can happen too....
Or does she have a Lovey?
From 6 months old, my son "found" his own Lovey, amongst the other stuffed animals, that was in his crib. All baby-safe stuffed toys, of course. But that is what he slept with and cuddled. He LOVED sleeping with his stuffed cow. Still does. It is a 'comfort.'
ALSO, is she napping during the day?
Over-tired babies.... actually sleep worse, cannot fall asleep well, and wake more.
Naps... are important. Do not skimp on naps or take away naps....
Each baby is different....
all the best,
Susan