Hm. Could she pee before she starts this behavior?
Could she use a towel on her bed?
Is it possible that this isn't urine, but what some girls have, which is referred to as a "female ejaculation". Some girls have a gland that squirts, but it's a minimal amount, it wouldn't "soak" a bed.
What it sounds like you're talking about here, is a full bladder release, as bedwetters accidentally do when their bladders are full. She can absolutely control that by peeing before.
To me, a real concern for her life in general is she loses bladder control during sex, and she doesn't care. It doesn't embarrass her that she's doing this and isn't taking steps to maintain privacy.
Best wishes. It seems like in our desire to have kids not feel shameful about anything at all, we're raising a generation of kids who really don't understand how to keep some things private.
Sorry for the spelling and grammar errors, smartphone fail.
I have a nine year old daughter who has quite enjoyed self sexual stimulation since she was old enough to find her privates. When I mentioned this in early childhood her doc told me it was of no concern as long as it was done in private. As she got older (around school age) I began to insist that the behavior be taken to a private place as suggested. Because I no longer witnessed the behavior, I hand forgotten about it assuming it has ceased. What had persisted however, was random nightly wetting of the bed. Some months ago now, my daughter shared with me that the bed wetting occurred as she was masturbating. Thinking I was bring very open minded and understanding I gave her permission to do so in the bathtub. I explained as the doc had suggested years earlier that this was a private act and that in her wetting I was aware. I explained that she was most likely urinating due too her bodies immaturity in being stimulated in such a manor. If such stimulation caused urination, then in the bathtub was the only real appropriate place to preform such actions privately. Since our discussion these behaviors have seen a major increase with an almost nightly soaking of the bed. She has responded by boldly and defiantly declaring that she does not like to preform such acts in the tub. As I had stated, I have tried very hard to remain open minded, but I an growing in frustration. I do not like being aware of such behaviors and have become really concerned about there frequency and lack of self control. As a Christian attempting to raise children with Christian values I have found it very difficult not to completely lose it. I finally decided to share my frustrations with our pediatrician at my daughters annual visit, but she was not very helpful. She herself seemed more uncomfortable discussing such behaviors with my daughter than I had been. She quickly ended the conversation and only offered me literature about masturbation in preschoolers and a recommendation for a psychological evaluation. I have attempted my own research about such behaviors among her she group, but have found only that regarding preschool age and teenagers. Had anyone else dwelt with similar behaviors? Can anyone offer any advice? I plan to make the appointment with the phych doc, however I am concerned I will receive a response similar to that of her pediatrician. I do not want to do anything to disturb my child's sexuality, but these continued behaviors are really beginning to affect our relationship. Please help.