I think it’s always been obvious that Isabelle is his favourite even though she is not his bio daughter.Sorry off topic but why is Chris having evenings out with Issy (she got to choose to do something other than watching him skate so they went to the cinema), he doesn't do that with his other daughters who probably wonder why he never has one to one times with them. It's weird anyway that she has to go with him every week on a school night to film his rubbish attempts at skating when she should be at home doing her homework or relaxing.
I know some stepdads can have great relationships with their stepchildren but then not all Stepdads are men who creep on young teen girls.
Also why didnt he take all 3 girls to the cinema why only Isabelle?Is he trying to prove something? Like he wants everyone to know she’s safe around him and he’s the doting stepdad? Does Isabelle even get a choice? Next year she is going to be working towards GCSES and school + homework will be so important.
Of course I doubt Sarah and Chris are Invested in what’s best for her future, only what they can get from her now.
It doesn’t matter if she doesn’t make it as a doctor, there’s always a YouTube career to fall back on!