My youngest rode this for the first time at 7, and she is extremely adventurous. She HATED it. She was clutching me the whole ride, and that is SO not like her. The only other "ride" I have ever seen this on was Stitch, which seems silly, but that ride is wicked stupid and I think causes anxiety in kids because you never know when he could "jump out".
This ride is the same. It creates a scary sense of anticipation. If she is not a ran of the jumpy, then maybe you should skip it.
To put things in perspective, She LOVES all the mountains, not scared of any roller coaster or other ride at any other park.