The saddest thing was one of the boys , Luke I think in one of the earliest programmes saying that each baby replaced an older child, but .."they'll always remember us as their children". It was very poignant in an odd sort of way. In the next breath Sue was saying how the children want her to have more and really love being in a big family.
Sue must have some sort of really strong defence/self protection mechanism that she can watch her children saying (on national tv) that they want her to stop having children but then say the opposite. I feel most sorry for Chloe, she has had to sacrifice the most and bear so much anxiety surrounding Sue's pregnancies.