It is a year before Beru hears the new that there is new Sith, she thinks that he is called Darth Vader. She cant be sure though as she only heard it the market when she was buying flour.
Ben Kenobi said a Sith killed Anakin, perhaps it is that one. She cant be sure though as she hasn't seen Ben for a year, Owen has made sure of that. She doesn't quite understand why he dislikes Ben so much, to her he looked like a kind, if broken (but then who wouldn't be) man. She hears that he is living in a once derelict house and that he puts blue plastic tarpaulin sheets in order to keep the sand out.
That's what the rumours are anyway.
Though she loves Luke with all her heart she sometimes wonders why he didn't take the boy in himself as he knew Anakin so much better that she ever did. She heard somewhere that they they have been described as brothers. Owen may be his step brother but, if the rumour is true, didn't his bond with Anakin transcend that?
She thinks to herself that perhaps Ben didn't want to have a living, breathing reminder of the brother he lost, or perhaps he didn't know how to raise a child.
Neither did she or Owen come to think of it, neither do most people.
At least, she supposes, she and Owen had a normal childhood. At least they weren't torn away from their parents at a young age.
Despite this she still cant figure why Ben would give Luke away.