I have a few users doing this, just use the attendant console program that comes with Call Manager. Download it from the admin page of your Call Manager (under Applications, select "Install Plug-ins) onto her PC. You can run the Attendant Console program on multiple PCs at once, not just the recetionist's.
Install and configure the client per the Cisco docs, and then do the following:
1. Make a speed dial list of the 10-15 phones she wants to watch.
2. Drag the Speed-Dials sub-window to the the far left, and the Call Control window over to the right of the Speed-dials. Minimize all the other sub-windows except the speed-dial window.
3. In speed-dials, reduce the width of the names column to just fit the longest name. Reduce the number and notes columns to the minimum.
4. Under View, select "Lock Windows"
5. Make sure the "activate console on new call" icon on the bottom row next to the "Call Control Up/Down indicator" is not selected (light grey background) to keep the window from popping to the front of her screen every time she gets a call.
6. Shrink down the entire Console Attendant window to just around the speed-dial sub-window.
7. If she's running dual monitors, drag it to the secondary screen so it doesn't keep getting covered up. If not, it is just a couple alt-tabs away when she wants to see it.
