Even if he had wanted to, I strongly suspect difficult child knows to keep his mouth shut when FM is ranting about Janna. You learn to get by, especially if you have learnt how to manipulate. If he HAD spoken up at the meeting (which, from his point of view, is only for the adults anyway - it's not as if they really are there to listen only to him; FM had the stage well and truly) then he probably would have had to deal with FM's anger either there or later. "Why didn't you support me?" I mean, how can he win, if he speaks up? It was only a few weeks ago she said she didn't want him.
I have heard a number of you who have also been FMs say that you didn't have accurate information. Janna, you've said yourself that you're fairly sure that past fosters have not had the true story. They certainly act like you're an abusive parent. If FM is behaving this way because of what she believes about you, then what she believes must be very interesting indeed. It would be based on what she has been told by CPS, as well as what she has worked out for herself on difficult child 2's behaviour and things he has said. And knowing the things he has said in the past - I think I can understand (not agree with, that's different) where she is coming from. If she really believes you were party to difficult child 2 being molested by SO (and others, maybe) and refused to take difficult child 2's part; maybe refused to let him be treated; refused to support him or get him help in other areas; and only want him home so you can get access to his funding (who knows what has been said?) then she is NOT going to be gently disposed towards you.
Of course she's wrong. But how do you convince her? With some people, they are capable of adapting their point of view when they learn the truth. Others never change their mind once it's made up.
Would it be possible for your lawyer to find out what FM thinks? Why she was so openly hostile? If he can correct her misconceptions, it might make the next meeting go a bit more smoothly. I don't know what you can do legally - things are different in the US. We have access to mediation here, where and independent EXPERIENCED mediator sits in and makes sure that no name-calling etc gets in the way of clearing the air.
She was way out of line. However, she was also being a Warrior Mum, in her mind. This tragic case, entrusted to her care - a child who has been molested by his mother's boyfriend, then by a foster family or two down the line - and they want him back home? No way! Poor kid! ('I was going to get him out of our house because he IS difficult, but I can't send him out into the cold, cruel world; besides, of course he has his problems, after all he's been through'). Try and think like she's been thinking and you might have some idea of what lies she's been fed. And from her point of view, how could she know which is truth and which is lies? If you can have some idea of what is in her mind, you will have more chance of coping with her next time you meet (because she is less likely to take you by surprise). It's then easier to not let what she says get to you, because it's not based on YOU, it's based on some fictional character SHE THINKS is you, but it's not really. And why should her opinion matter to you personally, anyway?
If she had a truer idea of the real picture, having someone like her on your side would be very interesting indeed. She's a fighter. At the very least, it might stop this extreme hostility. It could hardly make it worse, if you try to do it properly and officially with your lawyer's help.
Just a hunch, but I suspect she's not been a foster parent for all that long; or if she has, she's not had behavioural problem kids before. Maybe just a series of babies waiting for adoption... Certainly, she's not had kids like this before. But I suspect she's a relative newbie, if she's believing all she's been told.
Just a thought.
Marg