One of the saddest things about this has been seeing the children become increasingly isolated, the eldest was kept off school for over a year. Ioan's wife seems like such a sweet person that would make a lovely stepmum.
When Alice and Ioan's girls went to visit Ioan and Bianca at their apartment, Bianca had tried to plan activities to bond with the girls, like cooking together. The girls arrived, trashed the apartment, chucked oats and milk all over their bed, and ran out (after shoving Bianca), then claimed Bianca had assaulted the eldest. All of which was thankfully witnessed by a chaperone.
Alice egged on her eldest to try get a restraining order against Bianca (ironic when Alice has a restraining order due to her abuse of Ioan), then when push came to shove and the girl was stood in court being talked to by the judge Alice bailed and left her girl there alone. Incredibly traumatising.
The girls could have had a lovely life with their mum and dad and stepparent/s, Ioan especially travels all over for work and used to take the girls with him (one of the stick Alice beats him with is that he travelled too much: which he had to do, to work, because she wouldn't). Alice festers away in her flat, drinking, taking drugs, screaming at her kids they're bitches and to fck off and live with their ex nanny if they're not going to take her side.
She is malignant and destroys everyone around her. She's infuriated that Ioan has managed to get out away from her, that he has found love again, and got married, despite everything she's done to both of them. As a domestic abuse victim he has been incredibly strong and resilient. He is clearly taking guidance from experts in how to manage the alienation, and abuse.
His wife was in an abusive marriage prior to meeting Ioan, so no doubt their shared experiences bonded them too.