As I noted in your post a few hours after this post:
This Community (Forum) is populated by patients, not medical professionals. So, the best you can hope for here is someone will recognize the symptoms and tell you what their experience is. There is a pay-for "Ask a Doctor Forum" in MedHelp that may be able to help too, see:
http://www.medhelp.org/forums/Heart-Rhythm/show/91
I'm goona pull a guess out of you-know-where but it sounds like anxiety/panic.
I would suggest a combo of a beta blocker and a benzo in the short term to get her calmed down. THis could be Xanax in the short term + inderal (I would say 20mg t.i.d.). If this is effective I would switch her to clonopin for a more long term approach until she can get the PAD under control.
First things first, I would go after the sleep because without it the PAD is just going to keep getting worse and worse.