More Parenting lessons.... belated

My Megan is a deep sleeper. Always has been. Sleeping soundly is a wonderful thing, UNLESS your brain is so busy sleeping, it forgets to communicate with your bladder in the middle of the night. That, unfortunately is a problem we’ve dealt with since she was first potty trained at 2 ½ . We thought she’d grow out of it as she got older, but here we are and at 5 and she still wets the bed.
It’s never been a big deal at our house. We’ve kept her in pull-ups at night, and beside the occasional complaints of “wedgies” or “I’m a big girl” protests , it’s been fine.
Ex had a very hard time accepting that it wasn’t her fault and often punished, or made her feel bad about it. He insisted that I 'do' something about it a few years ago ,(because you know, I have complete control over her body). After spending weeks waking her up in the middle of the night to use the potty, with no improvement, I took her to the Dr. Her Dr assured us that eventually she'll grow out of it,and if by the age of six, she’s still having a problem then we’ll begin the whole Alarm system routine. So for years now we’ve given Meg her choice of pull-ups, encouraged her to ‘go’ before bed, and celebrated dry nights if just lightly so as not to put a big stress on it all.
Ali being older, and having never had a problem with wetting the bed, has in the past taken to harassing Megan like her Dad. She would repeat things that her He (Ex) would say, like that she was too old and shouldn’t be doing that, or that she is still a “baby” said mockingly which of course to Megan is the biggest insult a 3-4 year old could receive. I sat down with Ali long ago and explained to her the inability Megan has to control it, and pointed out how the hurtful insensitive things she said to Megan could really hurt her ego. Without deflating her Dad, I had to explain to her that her dad was in fact not correct in his approach. And that maybe he just doesnt understand. She agreed that she didnt want to hurt her sister and for the most part stays quiet but occasionally I do catch jab here and there, (which quickly gets her a pointed look from Mom).
So I guess my point to all of this is that we’ve really tried to help her not feel bad about her problem. I don’t want her growing up with issues or insecurities. But then a week or so ago, I reminded her to go put her pull up on. She began to cry, and for the first time ever she said what I had been dreading she’d say about it for years.
“But Mom, What if someone finds out and makes fun of me?” It was that last point. “What if someone makes fun of me” It finally occurred to her that this could happen, that her problem was in fact not normal and it scared me a little. . I assured her no one would find out, and that it was not her fault that she slept soundly. She seemed reasured but still cried a bit about it. All I could think about was how I could protect her from that ever happening. How can mommy fix it?
Yet another moment that I wish they’d written in a book for me.
By the next night she’d forgotten about it, and happily slipped into her new “boxer style” brand. I breathed a sigh of relief but that doesn’t mean that I don’t want to fix that communication between her brain and her bladder before any of her peers ever find out..