Louisville to Los Angeles in January

[mothermary]

Hello all. Another newbie here. Our 20 something daughter is driving from Louisville to Los Angeles in about a month (Jan. 2013). She has limited long-distance driving experience and funds. We've traveled in Southern and Eastern states so the West is new territory for us. There's not talking her out of it so . . . what advice would you offer, preferred routes, what to avoid. Signed concerned but supportive parent.

Moderator Note: We've moved this post to its own thread so we can easily discuss the details of your specific trip.