I rode a National show horse (arab/saddlebred) when I was a... seasoned beginner?
He was forward, but nothing that a 9yo couldnt handle. I wasnt confident or brave with riding either, so it just tells you a lot that I would get up on a 17h 'monster'. Lol.
Just take it slow if you arent sure. Ask her about a more... laid back or seasoned one?
Youll probably like it, I personally love saddleseat type horses, even though I own and show QH. Lol.