R.K.
I want to caution you against automatically thinking this is a lazy thing. Children do not enjoy waking up in urine, it is not a joyful happy thing.
There are many reasons for your child to be wetting the bed, some are medical for which you should seek medical advice, some are psychological (though that reason is low)such as a truamatic event (traumatic to THEM so you may not perceive it to be "that bad") so think carefully about anything that may have turned her world upside down.
We have two older children who have bed wetting issues...they'll both be 12 this summer. They HATE it and feel very frustrated, insecure, helpless by this.
Be very careful you don't encourage dehydration!!!!!!!!!!!
Because of the stress my daughter feels trying to stay dry she will lack the amount of fluids she needs AND try to stay away all night so she can get to the bathroom. PLEASE do not let this happen to your child.
Some simply do not produce ADH at night the way we do to keep us from voiding in our sleep, some have tiny, weak bladders, and some can't wake up.
So I plead with you, before jumping on the angery "you should know better" and self conserving "I shouldn't have to keep washing your blankets" and "you're big enough to be over this" band wagons, take her to a doctor. I also beg you to do your own research on the subject.
http://www.bedwettingstore.com/index.htm
http://www.goodnites.com/NA/bedwettingbasics/MythsTruths....
http://www.stopwetting.com/index.htm
http://kidshealth.org/kid/health_problems/bladder/enuresi...
http://www.aacap.org/cs/root/facts_for_families/bedwetting
http://familydoctor.org/online/famdocen/home/children/par...
http://www.youtube.com/watch?v=PrLQTrXsbLk
http://www.medicinenet.com/bedwetting/article.htm
OK...I think you'll get the idea with this.
I know it's frustrating, but it really isn't the worst thing in the world considereing all the other issues you could be dealing with. We just have our children get their blankets and put them into the washing machine in the mornings themselves. I don't care one bit how long they will wet the bed so long as they take care of it and they know I love them and that they are brilliant, wonderful human beings that bring my world an abundance of sunshine and goodness.
You'll get through it!!