It is always a guess how big they'll get - you never know if they'll take more after one parent or the other. I would say, though, don't dock her ears. I adore floppy ears, and she'll still have that bully face. A lot of people who are afraid of pitties key in on docked ears as an identifier, and I have seen ear docking badly done as well. Spare her the ouchies, and many people probably won't even guess her heritage!

Plus, as you have a three-year-old, it'd be better for the pup not to have "sore places" - training a 3-year-old and a puppy to respect each other is enough of a challenge!

I bet she's completely adorable, by the way. What's her name? Have you decided? And I am betting that, if she's got the blocky "bully" head now, she always will! Nothing like that block-headed grin, is there?