How do I word it? Continuing saga of evil lil SD#2

My not so D-stepdaughter was over again yesterday.
She's broke (big surprise!) and $700 behind on her car payment. She said she came to get her dad's advice on how to get a motorcycle that's technically not even hers, long story, up here from Texas so she can sell it to make the car payment. This less than a week after I read on her FB page about her buying concert tickets for her and a friend.
Anyhow, when SD arrived both dogs ran up to her excited to see her. I noticed that she pet Jax (DH's dog) but shoved Kane (my dog) away. Once before, in the 5-1/2 months that Kane has been with us I saw her kick Kane and once hit him. Not hard enough to hurt him, but hard enough that Kane gave up on trying to be friendly with her and walked away. This from a supposed big animal lover. I feel really bad for the pup because he loves everyone (and I'd like it to stay that way).
I brought it up with DH last night and he told me next time I see it happen, I should call her on it immediately. I intend to do just that, but how do I word it to her?
My gut tells me that the next time I find her being mean to Kane I should just tell her that I won't tolerate it. That Kane lives in this house and she doesn't and if his behavior bothers her, the solution is simple; she can just not visit. Problem is, I don't want to go overboard and upset both DH and her older sister, whom I get along fine with.
I'm tired of everyone excusing this girls behavior - poor, poor her - when she's really nothing but a spoiled lazy brat, with a mean streak.