Great article. My kids are exactly the same (5 and 8). I would rather have them use their imaginations to play and build than watch TV violence or stupidity.
I would recommend iHasCupquake for YouTube videos. She is engaging and funny and is someone your daughter can find inpiration in as well (youtube.com/user/iHasCupquake)
Oh, and iHasCupquake, if you for whatever reason read this my daughter thinks your "hair is very pretty".
Played with it a bit last night. Initial impression is it has a much lighter feeling than other frameworks I've tried. Will be diving in deeper for sure.