Here are some things that u can do:
* Start her on antibiotics and NSAIDs for 7 days
* Check dryness of canals.
* If there is too much of infection then you can irrigate the canals ( and the periapex) with injection gentamycin. I do it in very rare cases
* Drain the abscess.
Most of the times a proper biomech supported by antibiotic cover does the job. RCF should wait till the lesion heals up.
Post IOPA if possible.
Hope this gives you some ideas.
regards,
veeren
