Glad to hear you moms ok. And I would definately take that bike back to Walmart and demand for a full refund and make it clear you will sue them if they don't and they won't think twice about giving it to you. I have also had a bad wreck on a Walmart bike. I bought a Mongoose XR200 from Walmart and it seemed like a pretty damn good bike. After I had it for about 2 weeks I put a speedometer on it and a day or so later I ws riding it with a freind and for no reason the chain flew off and my left foot flew to ground resulting in me going over the handle bars face first! I was going 22 mph when I wrecked and I slid about 10 feet. I am only 17 years old and my dad was thinking seriously about suing Walmart. But he ended up not suing them, now I kind of wish he did bacause of all the injuries I got. I got a chunck of meat cut out of my face right above my eye and I slid on my arm and leg for ten feet. I wil never buy a Walmart bike again, PERIOD.