The medicine she took contains ketorolac, a strong pain reliever. Since she took two tablets this morning (likely 20 mg total), she can safely take one more tablet now, provided at least 4 to 6 hours have passed since the first dose. Please ensure she does not exceed 4 tablets (40 mg) in a 24-hour period to prevent stomach irritation. Because she has swelling, there may be an underlying dental infection that painkillers alone cannot cure. I highly recommend contacting a dentist soon for a proper evaluation and potential antibiotic treatment, while keeping her comfortable with warm salt-water rinses in the meantime.