My 6 year old daughter fell off of a deck about 4 feet from the ground and landed directly on her right butt cheek onto the end of a 2x4 board. She got a really bad bruise. It took about 3-4 weeks for the bruise to completely go away. Now, all of a sudden her skin is indented (about a 3 inch indented line) and you can feel a bunch of scar tissue underneath. Will this go away? Should I take her to get it checked out?