Yep, i took her to my Brothers house to introduce her to Pixie (Rottie x Bullmastiff) and oscar (Rednosed Pitbull x Bullmastiff) and while they all got along well, Rosie looked very out of place!!! She has not had any major growth spurts and im not sure how much bigger she will get... Yes she is adorable!19kg is almost 42 lbs. Mastiffs, rottis and Wolfhounds are all huge and labs aren't small, either. I think maybe your baby has a touch of something smaller in her. She's adorable either way.