This will make me unpopular for sure, but it seems to me that if the woman is unjustified in asking for a Get, then she is the aggressor and the husband is under no obligation whatsoever to grant her one.
The fact that she is completely determined and committed to ruin the marriage is worthless. She is inflicting harm and that can obligate no one.
If the kids get ruined thereby, it is she who has ruined them. Not him.
(I do fully understand that the husbands best interest is not to have his kids ruined, so he would grant the Get instead. I discuss only who is at fault.)
Again, marriage is no prison. If she cannot hack it, she is entitled to leave. But only if she must. If she wants a divorce because she thinks she can do better or for variety’s sake, she is doing wrong.
She is entitled to petch, lots of them.