Dunno about starving, I think it would just make the dog hungry and sad. :( People do all sorts of dumb things to try making dogs "mean"...
Rottweilers aren't terribly vocal, mine usually don't bark - though I've noticed if someone comes up after dark, they are more likely to bark. Several months ago my brother & his girlfriend came up for a visit from Chicago, and just let themselves in at about 2am. Oops. Cooper was sleeping in the hallway and I guess he scared the beejeezus out of them, he charged the door barking!
He was fine as soon as he recognised my brother though.
Apart from my female barking at wildlife sounds if I leave her out after dark, they're pretty quiet dogs...probably a good combination is a little ankle biter to yap like crazy when someone comes to the door, and a big scary looking dog to act as back up should the need arise... :D
Kiara sounds like a friendly, outgoing dog, she may well find her voice a little later in life, she's practically a puppy still!