My daughter received a Trolls colour your own tote bag for her 4th birthday. I think the product is great and my daughter actually did a great job of colouring it in! But how do you set the ink?? Still two weeks later the ink isn't dry and is transferring to other items. Is there a secret to setting the ink??? It's such a shame as I have had to take it away from my daughter at the moment as I don't want it transferring on the sofa/carpet etc.