We have 2 Danes and a kelpie.
The kelpie is an excellent dog, but I would highly recommend a Dane for a family.
I love our two to bits, they are placid and absolutely brilliant with our kids. We have chooks and the older one isn't even fazed by them (to the point I watched one of our chooks walk up to him and peck a bit of fluff off his nose haha)
The girl is a bit more 'playful' with them, but she wasn't 'raised' with them like the boy, so they are still a bit of a novelty for her.
Our dogs aren't inside dogs, as we have 2 soon to be 3 kids under 3, so there is enough chaos inside with out adding 3 dogs. But I have seen MANY Danes that seem quite at home inside
They don't smell, even for 100% outside dogs.
The only thing I would suggest is teaching the dogs spacial awareness, and teaching your dd to 'stick up for herself'. My dd and ds know if the dogs get to much in their space to say 'out' to them, so the dogs know they are to close.