Its odd isn't it that Ryan is shown to be so invested in his dad, but seems totally uninterested in his mum. Doesn't even go with Catherine to visit her grave. Never asks about her.
I think this is a flaw in terms of the writing, surely by now if not earlier he would have been asking about Becky, Catherine's daughter, the daughter of the woman bringing him up whose house he is living, rather than just some constructed concept of this father.
this has always bothered me.