hi there, and welcome
First off, how old is your dd??
Second, please don't leave her to cry it out anymore. Tracy believed crying it out broke the bond of trust and that there is always a better way to deal with issues. Don't kick yourself over what has already happened, but let's see if we can't find something better for everyone involved!
My thinking is that if she is waking up at nite and eating that much, she could really be hungry. Or, she could need to suck. Does she take a pacifier?
Also, she could be having a growth spurt, or be about to hit a developmental milestone.
If you determine that she is not hungry, I would use pick up/put down or pat/sshhh to try to get her to sleep.
Also, you can NOT spoil a baby at this age, so make sure you do go to her if she cries in the nite.
HTH