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1. Nobody is stupid enough to try something like that, Except maybe Bolt.
2. Should that happen, Sasuke would go maximum rage mode, and it would be similar to Gokage summit Sasuke. He would look whoever did it, then murder their while family, loved ones, and any acquaintances of the person on question.
Naa, Bolt isn't going to try to kill her, but in the future hes probably going to want to date her. Shes going to stalk him until he does and that's when you'll get to see the final Naruto/Sasuke showdown, "The Battle of the Overly-protective Dads"
"Naruto, your son has been fooling around with my daughter!"
"Lighten up Sasuke, shes been throwing herself at my boy for years."
"My little girl would never do anything like that"
"Uh,well yeah she would and did.....I didn't know you could still make a Chidori..."
You get the picture.