I have read the entire thread, and I agree with what many others have already said. The "watch me, watch me!" is a HUGE red flag for abuse. Your email was WONDERFUL. Based on her respons (and not mentioning the incedent when you picked your brothers up), it's time to go to CPS. From the little knowlege I have, they MUST investigate things once there has been a "tip" of possible abuse. Since your friend has made it very clear that she doesn't intend to do ANY investigation, someone needs to.
Ok... now purly as the devil's advocate
, but is there ANY posibility that your brothers were not telling the whole/exact truth about ANY part of the day? I'm guessing that there is NO doubt in your mind, but I also know that many people have trouble even considering the idea that a loved one may have lied. Please no flames...
I stand by my first paragraph, and apologize about this one. Based on your descriptons of your brother(s)'s behavior when your picked them up, and what he/they told you, I believe that the story you got is entirely the truth. Still, I don't know them (or you, or your firend), and I wasn't there, so I felt I had to at least mention it.
, and lots of good wishes and strength to you, your family, and your friend and her daughter
. I hope everything can be worked out, and I REALLY hope that this little girl hasn't been hurt, and that there is some other explination for her behavior (though at this point I really doubt there is