Hmm, just my opinion, but I think it's a little unnecessarily harsh. I would totally take out the "lack of respect...and my facility" bit. I think that a simple "after careful...effective XXXX" and leave it at that.

I also wouldn't bother with the illness policy thing. For what, you know? I am sure they're aware that their kid is a mess, and are going to get pretty frustrated that their care arrangements have yet again been terminated. Why rub salt in the wounds?