Hello there, and I'm so sorry your daughter is struggling. I am autistic (with ADHD symptoms), and I had a very similar reaction to Wellbutrin (when I was in my mid-twenties); I was bouncing off the walls, not sleeping, and very anxious. I now take lorazepam (aka Ativan) for sleep and panic/tachycardia attacks (have done so off and on for nearly a decade now, and it is an absolute lifesaver). I take a very low dose (unless I have really bad attacks), and I have never had an issue with dependence or withdrawals. I even voluntarily stopped filling my prescriptions for several years when I had a lull in symptoms. Maybe I'm different from other people, but I have never felt high with this medication. There are some weeks/months where I don't even take it.
In terms of potential for abuse, it is a Schedule IV drug here in the US, meaning the likelihood of dependence is way less than medications like ritalin (schedule II). It is also a long acting benzodiazepene--and in my case way more effective than short-acting benzodiazepenes like xanax (which actually worsen my anxiety/sleep symptoms). Just remember that all bodies are different, and some taboo medications may prove useful for SOME people. Just something worth considering.
I also take a high quality (broad-spectrum CBD oil) and practice meditation/breathing exercises twice a day (and at bedtime).
Note: I can't take beta blockers due to my really low BP. I'm on my way to a cardiologist in February, and it can't get here soon enough!