If she's cutting molars, this could cause the pope to be a bear! DS went from my 'little happy man' to GHENGIS KHAN (sp?) overnight, and then back to his sweet, angelic self within two days when cutting his eye teeth and molars. You could see the white of the tooth thru his gums for THREE WHOLE days before they finally broke thru. That's gotta make anyone cranky!
I hope your sweetie is back to her old self soon, and it's 'only' teething making her unhappy.

I hope your sweetie is back to her old self soon, and it's 'only' teething making her unhappy.