I found their last vlog weird... They always act so awkward in certain social situations. I get everyone is different, but Darren's reaction to the small carousel ride was really bizarre. I think a lot of it has to do with their past - and I'd genuinely love a really long sit down chat about their past. Obviously that won't happen, and understandably so (both parents seem to have a lot of personal scars from their past). But it'd be really interesting, from a psychology perspective and definitely explain why they behave the way they do.
I do feel as if they're still trying to run away from their past, and would both probably benefit from some therapy to help them through it. Not a bad thing at all - I had a bad childhood, and have had counselling to overcome many things. There's still scars and triggers, but I don't spend my life running away from it all.
Glad Sienna seemed to have a good day though. She really is a very polite little girl. It's just a shame her full potential isn't being reached.