Thanks for using Health Care Magic. Read your query. In your query , you have not mentioned whether there is decay in the front tooth or is there any history of trauma in that area . Based on the description provided , it can be suggested that is a abscess formed in relation to the front tooth which may cause a slight mobility of the tooth. I would suggest you to give her apain killer like ibuprofen (if she is not allergic to any medicine), and take her to the outpatient facility and get it reveiwed .She will need a course of antibiotic on prescription and then the dentist can do the needful treatment . A radiograph will be needed in her case. Do warm saline gargling and do not apply hot bag externally. Hope this was useful. Thanks and regards.