T.:
I'm sorry that your sister is not doing well. It sounds like she needs a complete physical and some blood work drawn.
No, I have not dealt or have experience with these symptoms. By your SWH - your sister is having major anxiety attacks - and I mean MAJOR - I'm not a doctor - but those are some of the symptoms of anxiety - lack of sleep, etc.
There is NOTHING your sister or ANYONE can do about their past. She needs to seek counseling - even with a Priest/Pastor/Rabbi if not a psychiatrist to make peace with her past, learn from it and proceed on to her future. She CANNOT live in the past and CANNOT stand still - she has to learn from her mistakes and her regrets - NO ONE can do that for her but HERSELF. She has to want to help herself. She has to want to change. Kinda like an addict - they have to want to help themselves - no one can force them into it.
The free clinic may have thought she had allergies and that's why they gave her an antihistamine. Unless you went with her - you don't know what she told the doctor and what they did.
I personally have never dealt with an acupuncturist or a naturopath. I've had people that have done acupuncture and swear by it.
Tell your sister to start a journal to track her feelings and anxiety. Even if it means typing into a computer if she can't write. Or even recording it on a recording device. Just to get it out there. Breaking down what is causing the anxiety is what she will need to do. Figure out her regrets from her past and how she can move forward.
Good luck to both of you!!!