Holly is very rigid in her thinking and planning imo. While I can see how this could be a ploy for engagement, I also genuinely wouldn’t be surprised if Holly genuinely hadn’t considered making it to worlds this year. Her perfectionism means she tends to downplay her own achievements to herself, so really wouldnt shock me if she is still adopting her black and white thinking patterns here. E.g. I can see her making her mind up that she would never have reached the world championships, so booked the non refundable flight, not even factoring in the slight possibility that she could qualify. Then when she qualified, this turns her entire plans on their head. With Hollys lack of mental flexibility that probably feels extremely overwhelming (to have to either not go on a non refundable flight to get cheaper ones to the world championships and leave Angelo for a short while, or go on the flight and spend more money to get back to the championships).
She is not spontaneous at heart- her spontaneity is saying she’s travelling while adopting the most rigid planning/training routine. Angelo probably isn’t encouraging her to do what’s best for her- which imo should be finding the best way to make the world championships feasible to attend. This might look like parting ways for a month, but god forbid the most codependent and bizarrely bonded couple should go their separate ways for longer than a training session.