I believe you mentioned the ionto was too painful for her which is a shame as it works for you. Sorry if I'm mistaking you for another mom. My experience with botox was that it is a trillion times more painful. I believe it was 50 needles to the palm and fingers of each hand with nothing but rubbing some ice on them beforehand as a "pain reliever". This was done by Dr. Solish, considered the foremost expert in my area - and when I went for a second opinion later, the dermatologist basically asked, well who did the botox. When I told her - she said, oh, well he is the best so if it didn't work with him don't bother. I guess everyone is different. My HH was/is never as bad as some on here. Caused social anxiety but never outright depression, suicidal thoughts or really stopped me from doing the things I wanted to do so you'd think botox woulda been a complete solution.
Anyways, noticed some relief the first time, but not nearly what they claimed and the cost of it plus the hassle and pain made me give up on it after 2 treatments. I woulda endured the pain, time and cost if it was 100% effective for even 3 months at a time. Money and time and pain weren't really ever an object as I'm guessing it's probably not a big consideration for most of us compared to the thought of a cure/solution.
Both my young daughters have it so I will be continuing to watch and hope for a solution for your daughter and one for mine when they are older and start to care about it. Right now, they are blissfully unaware that they are different and I hope that bliss lasts for a while...