I have two Boxers, I love the breed. Both are reverse brindle, but my female has the same white markings as yours. The people who had her before us, they were very rough with her. She is such a tender thing, she lacks so much confidence, we are working hard giving her lots of love.
My male isn't a boxer, he is a moose. He's six months old and he's already 60lbs and bigger than my girl. Gotta say, he's my baby though. He crawls into my lap give me kisses and makes himself comfortable.