I drove the Blue Ridge parkway with my family when my kids were about your daughters age. I heard a lot of "Honey, slow down, you're going to kill us!". But actually there were precious few opportunities to let it out. Most of the time you are in a line of cars putting along behind some RV doing less than the speed limit. You will get some chances at the curves though.

On the plus side, there are many cool historic attractions along the Blue Ridge parkway. It's worth it to buy one of those mile by mile guides. One of my favorites was right off the parkway in Roanoke VA, where there is a great train museum.

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2014 BMW 328i Xdrive
2011 BMW 335i M-Sport
2008 BMW X5 4.8i Sport
2000 BMW 528i 5sp