The latest version of Vegas Movie Maker (13) is supposed to be touch screen friendly. I have absolutely no idea if it will run on your device and I suspect it won't. You will have to look at the requirements and see if it will run on your device.
Some dude on another forum has developed an app that allows you to make simple changes to Vegas Movie Studio remotely. That's the closest I have found to editing videos using a tablet. I haven't tested it yet.