Although Helen was pushed to the limit, there was no need to keep stabbing him again and again after the first or second time - I suspect she's going to be Sectioned
Have you been following the line this script has been taken over a period of time? I usually listen to the omnibus edition on Sunday from 1000 to 1115.
It has been an insidious on-going process where to make matters even worse, he brought his mother along for a while to aid his vile plan of mental cruelty. The child is only about five, but Rob and his mother visited the boarding school that he attended as a child to see if the school would take him earlier, but of course, no mention was made of this to Helen but the child was distraught and accused Helen of wanting him to be sent away.
Kirsty had tried for weeks to get Helen to see sense, but such was her condition and frame of mind, she refused to take heed of the warnings. Rob did his best to keep Kirsty away from Helen.
There was also the matter where both Rob and his mother were insistant upon a home birth rather that one in hospital that she wanted, especially after the difficult time she had when Henry was born.