I'll be interested to see what the man in the situation gets when his case is heard.
On the rest of it I can see both sides TBH and it's really all dependent on the full situation.
For one, I don't know much about how things work in Australia, social services, divorce, support services, anything. It says she lived rural and didn't drive - I remember watching progs about people in farms in Australia having to have the flying doctor and get educated by radio and stuff because they were so far away from even their neighbour - if it was like that then it's a level of isolation I can't comprehend and all sorts of weird stuff can start going on when people are isolated to that extent look at religious sects out in isolated areas in the US.
So, I dunno, really. Really really depends on whether she was complicit and knew she could have got them out and chose not to, or whether she and the children were controlled to the extent they were captive and she couldn't have got help if she tried IYSWIM.