Carey,
How would your twins Know, what anyone says, is a lie; unless it is about something they were a party to?
I don't see how they could. They might Think they know something; much the same way you Think you know something.
Are they eye witnesses to any event that Amberly has described in such a way that they feel she lied about it? If you think you can say yes, be very specific please. Just Yes, is not good enough, when making such a claim.
You have said your twins claim no one was battered at Dundee; but they told the reporter that while they weren't, others were. You say this is true; the reporter hadn't lied about their statement.
So, how is that different from what others have said, whom you claim to be liars?
Your twins may not be privy to every event and circumstance surrounding Dundee. In fact, there is no way possible that they were; and no reason to think they are more knowledgeable that any other kid.
So, they may not be able to truthfully testify to the same events and situations as someone else; but that does not make all others with differing testimony, liars.
This TOO, has been explained to you SO many times.