Welcome to HealingWell and know that you have found a group of kind and caring members who are willing to help you. To be honest we do not get a lot of posts re WPW.
Patients with Wolff-Parkinson-White syndrome (WPW) are at a very slightly increased risk of suffering dangerous disturbances of rhythm and radiofrequency ablation is often the recommended treatment.
Radiofrequency ablation (cauterising procedure) is successful in 90-95% of patients in curing WPW.
Although uncommon, complications occur in 2-3% of patients undergoing ablation.
I would kindly suggest if you are concerned re your daughter's symptoms that you contact her cardiologist to see if she would benefit from moving her appointment up from the 19th.
Prayers for your daughter re her sx as well as the anxiety that comes with worrying about her procedure.