There's no evidence that the twins were ever a recipient of violence. This is again scurrilous rumour, which I'm surprised (or am I?) you seem to have swallowed hook, line and sinker. Julie threw a bar of Shield soap into a shopping cart in a Maldon supermarket and it hit Jeremy on the nose, so maybe she should be escorted to Styal prison forthwith. Jeremy pinned Julie's arm behind her back at Moreshead Mansions, when he realized the truth was finally about to emerge.
It is more than just a scurrilous rumour, but it is less than proved.
I explicitly stated that it was alleged. I did not state it as fact. I have 'swallowed' nothing.