There is no way they would sacrifice having another baby for any thing. Let's face it anyway, it's hardly Sue or Noel that will be doing the bulk of caring, it'll be a few of her sisters.I think it's an awful pic. When you first look at their instagram it looks like she's passed out in a wheelchair. I also remember Tillie didn't want anyone to see her cage when she first had the op and I know she goes online and on youtube, so doubt she'll be happy to see that pic.
As someone else said, I do think it was selfish of Sue to get pregnant again. They were given advance notice of Tillie's op and how long her recovery would be but she still went ahead and got pregnant knowing Tillie was going to be in that leg cage for 9 months. Now her recovery will take longer yet Sue is just focussed on the new baby whereas she could have been giving Tillie all the attention she deserved.