As always, if this is a personal case please heed the disclaimer about medical advice on these forums 🙂
The history is key here. Does the patient have CAD or HF? If so then flecainide and propafenone are out. Does the patient have contraindications (absolute or relative) to amiodarone such as severe lung or liver disease? Is the patient symptomatic enough to require an antiarrhythmic, or can the pt be managed with rate control medications in the presence of a pacemaker? How old is the patient, and what is their left atrial volume index?
Depending on the answers to these questions, if the patient is symptomatic, two viable options are catheter ablation (pulmonary vein isolation) and/or antiarrhythmics. Amiodarone is significantly more effective than all the other antiarrhythmics, so keep that in mind. If she has failed adequate doses of propafenone and sotalol in the past I would not go back to these. If the last time she tried antiarrhythmics was 15 years ago, then dofetilide (Tikosyn) is a new option to try if you want to avoid amiodarone. Dronedarone is also an option although I am not a fan; it seems to be fairly ineffective in my anecdotal experience.