LOL That's strange... One of my family members broke their ribs because they were sleepwalking and mistook a bathtub for a bed, so yeah... A lesson to be noted: DO NOT throw your body into a bathtub.....
I just can't quite comprehend why some people walk in their sleep. I mean, If I got out of bed and started walking, I'll surely wake up. What DOES cause sleepwalking habits anyway?
You'll need to make sure that you're parent's insurance covers it, but have you considered using a CPAP machine? It is a nifty little contraption and has litterally increased my sleeeeep quality 10 fold. I can get by for a full week on one good night with my CPAP machine. http://3.bp.blogspot.com/_6cJAVhcBM...320/Copy%20of%20full%20face%20cpap%20mask.jpg
As uncomfortable as this might look, it's the only thing that has been able to help me get good sleep during the night for the past 2 months.
If you can, give it a try. It will do you wonders whether you've got sleep insomnia or not.