I realise all you lovely ladies here have twins and, now, love it. But can you not hear what Farty is saying?
I know you mean well but I don't think she wants bouying up with jokey stories, I think she is terrified and at the end of her rope right now. How about some tea, sympathy and a chat through the options open to her?
Farty, correct me if I am wrong but that is what I am picking up from you right now???
Why has your 7yo not got the help they need at school? Is there anything the LEA can do to help that one?
WRT your 5yo, a lot of them do that but it is no easier to handle because you know other people go through it!
What support do you have, what options can you see for the futre, are there plans in place to sort out the schooling and so on? What I mean is, do you see the situation you are dealing with right now getting better? If the situation you are currently living in is too much for you then I can quite see why you are terrified at teh thought of twins!
Having a large family is a challenge, it is a very different way of life and parenting to having a small one and I should imagine having twins is very different to having a single. Could you find a twins support group to chat things through with? Do you still have a HV you could enlist for support?
Do you really feel you could live with the decision to terminate? If not then you need to take it off the table as it were and work out your next move - if it is a real option for you then you need to get in to a councillor and talk it through - honestly and openly.
What does your OH think?