I seem to recall something about Alex having her son on for weekdays and the ex has their son on weekends. I kind of feel for the ex, with Alex being described as a 'single' Mum throughout the show. They're co-parenting, they're just not together. I guess it is in how the words are broken down, i.e. she's single, but she's also a Mum, or, she's single handedly parenting ...
Well, we know where Olena gets here eyes from. I kind of like her parents. They're cautious and protective, but they seem to have good hearts.