I go along with saintjohnny when he says the youngster shouldn't in mainstream, but having said that, i'm not there, and you are, anyway, this post isn't really about him, its about you, and your relationship with one or more of your peers, I go along with what I suggested before, confront, in a non-confrontal way, the people who are being nasty to you, and ask them the reason for their behaviour, its possible, other than what i've already said, that they may be blaming you, for the child still being there.
Thanks for asking about my daughter, she's twenty two now, and goes a day centre centre, its a private one, as the local Social Service run one couldn't cope.
I hope things work out for you, Bless you for the job your doing, its a hard one, and I know people like you, do it mainly out of the goodness and love in your hearts.