I'm a retired radio broadcaster, and I used computers during my working years -- but mostly for "office" work, writing commercial scripts and specialized broadcast-specific apps where the computer was an integral part of the station's broadcast equipment. Will your daughter use her laptop on the job, and if so, what will she do with it? For that matter, what kind of broadcast job is she looking for?
Regardless of what she does, I recommend you/she strike a balance between long battery life and light weight, then get as much RAM (4GB is usually the maximum available on a notebook) and as large a hard drive as you can afford. A big screen isn't as important as portability if she will be a reporter or sales rep; a good keyboard is essential if she writes news or commercial copy, but for that I prefer a desktop-style USB keyboard anyway. If she works nights and weekends as a deejay, get her a laptop with a fast processor and great graphics, because she'll probably play games to pass the time.