Anxiety/panic attacks madicaition. If you know about new meds, please help.?

Hi, my sister has panic/anxiety attacks on a regular basis. I am currently in China and will be here for awhile. I usually went with her to see doctors, because I went through this years ago and it empowers her to see that if I can do it, then she can do it. Problem is she has been takng alprazolam (Xanax) for several years and its not too effective anymore. Are there any new, cutting edge meds that she could switch too? I saw something about klonopin on another post, stating that it takes immediate effect? Is there anyone that has any experience with this or any other new meds. Many doctors do not know much about new meds, I need to hear from personal experience. She is already doing altinative relaxation techniques:Yoga, deep breathing, etc. So no need for advice about that, just about something more updated that she can talk to her doctor about. Wish I could be there for her, but maybe its good for her to face it on her own. Thanks for any info.