Chew on cold objects. I would first see if allowing her to chew on a cold washcloth or one of the teething rings designed to stay cold would be of help. You can also massage her gums to see if this would give her some relief. If this didn't work, i would recommend a weight appropriate dose of Acetaminophen or ibuprofen. I don't recommend any topical anesthetics such as ambesol or baby orajel.