I just swapped out a motherboard for a buddy's Dell.
They're quite prolific so you should be able to find disassembly instructions on the web like I did. Google the model.
You'll want to remove the screen, take it apart and see if anything is out of the ordinary in the connectors or holding clamps. The sudden impact could have shifted the actual screen a few millimeters thus causing the lines.
If worse comes to worse, go to Ebay and look for a replacement screen.
It could be fixed for a reasonable price if you do it yourself. If any shop is involved, the repair price would be close to a new laptop so try your best to do it yourself.
My buddy's laptop was quoted as 'over 500 to repair'. We did it for $140.
Another repair possibility would be to buy another identical model and just swap the hard drives. The wife would have all of her data on the old HD.
Another possible solution for the data would be to put the old HD into one of those 2.5 inch external usb drive caddies. You'd have your data preserved and could transfer it to your new laptop via usb if you decided on a new laptop. A usb drive caddy is less than 10 bucks. (ebay - drive enclosures)
If you were close, I'd say bring it over and I'll take a look for you but North Carolina is a tad far away.
If you need more help, PM me.
-John C.