I found this story horrendous to read. I'm friends with a lot of people who have very disabled children and they would give everything they have to not have to claim DLA or put their children through more surgeries.
How she managed to convince Doctors they needed gastro tubes put in I don't know. A child needs to be seen as not thriving at all to get this, which means she must have been starving them. And as someone else pointed out, autism diagnosis takes a long time and you need to jump through many hoops to get seen, never mind diagnosed so I can't work out how she's managed to bypass the system.
But ultimately, those poor kids have been starved, put into nappies they didn't need, given operations they didn't need and basically been used to gain money.