NV Democrats Nominate Kate Marshall: Wrong Carrer Move?

NV Democrats today nominated NV. State Treasurer, Kate Marshall to run in the 2nd Congressional District today but is it a wrong career move?
Kate Marshall is probably the most likable and moderate Democrat in Nevada, to the point, I even like her and would consider voting for her.
But she is running in a District that is dominated by Republicans and stands little chance to win the election. She is not going to win this election for CD2, it's a fact.
However, if she chose to run for Senate in 2012 for the seat being held by Dean Heller, she not would only beat Shelly Berkley, she probably would beat Dean Heller. The race with Berkley wouldn't even be close- she would kick Berkley's butt and the race with Heller would be close but it would be winnable.
So, apparently, Kate Marshall is content to be State Treasurer until 2016 when Harry Reid probably retires. What a shame.