R U open plan? Is there a way to block off the rooms where there is furniture

As for lunging, it's something that pups often do as they get bolder. The larger breeds often don't mature until 2-2.5 years old. Lots of observance of her behaviour with people/dogs that she doesn't know, from a distance. Body language says a lot.
dogue de Bordeaux are all shoulder, mastiff-type breed - a neighbour had one and he was lovely but very strong, her husband walked him. Often big dogs don't know their own strength and appear intimidating!
Me - out of bed, bathed, dressed; breakfast to hand
Yes I remember liking Eyemouth.