Hi S.
My son, who is now 11, wet the bed until he was about 9. He would do very similiar things with his pull-ups. It wasn't until about 10 months or so ago, we were talking about general hygiene and the importance of it, when he disclosed to me that he knew it always upset us the way he would handle his pull-ups, but it made him feel really embarrassed that he still wet the bed, so that was how he tried to "play it off" that it didn't matter to him. So, maybe your daughter is acting the way she does with the pull-ups because of an embarrassment issue. He also did not get in trouble for wetting the bed, we understand that he couldn't help it...we also did not tolerate the other two boys making fun of him for it. We were as sensitive to his feelings as we could be, but it still did not keep him from feeling ashamed for it...
For us something that works pretty well in house for the boy's random clutter and sloppiness: Whenever they leave something out, if I or my husband have to pick it up~they don't get it back. We do the same thing with snacks and that sort of thing~like if you leave out the milk, well you didn't care if it spoiled on the counter, so I guess you didn't want to have any with your dinner...
It seems that taking their things away from them is the most effective; we also do not give them a set in stone time frame of when they will get it back. That is completely at our choosing; and when we feel like they have been doing real well at cleaning up after themselves they will get something back.
hope it helps
Y.