You are wise to get an additional evaluation for autism — that’s the only way to know if she’s on the spectrum. It’s common to have both ADHD and autism.
Let’s talk about her anger. Did that start with the medication or was it always an issue? If it started with medication, you need to talk with the prescribing doctor about this. It’s a sign that it’s the wrong medication or wrong dosage for her. Here’s some info on getting the right meds:
If the anger has always been an issue, it could be poor coping skills or frustration tolerance, which could be a symptom of either ADHD or autism or both.
ADDitude Community Moderator, Parenting ADHD Coach & Author, Mom to teen w/ ADHD, LDs, and autism