While it is extra work for you, I'd suggest the first thing you do when you get home, is check her room. If it isn't tidied, then call her up to do very specific things.
"Put the clothes in the hamper"
"Pick up all the pop cans"
"Make the bed"
Very good idea. Additionally, you might put "the list" on a piece of paper.....just like in the business world, a task list to be checked off. There's something about crossing out an item or checking it off that gives anyone a sense of accomplishment. The "list" could also be used as a "reward" generator (for the short term). my 2 cents.