So by wanting to be here for a few months and trying to do it properly, she is penalised and is unlikely to be able to return to us. This trip was supposed to see whether their relationship was a strong as they felt it to be and to work out whether & how, in the future, there would be an option for her to move across here as a partner. It doesn't seem fair that there they chose to decide she may not go back and the only option is to start all over again and take a big risk of losing over £500 in fees etc.
Looks like they've blown their future together totally, unless we win the lottery and she braves travel to Caracas again. She should have just come across for a month or so each year without a visa.
If she had proof of cancellations and a document from me, would she still actually need a visa? She just came in for 3 weeks last time without any need for visas or letters. And the website says that it is advisable rather than necessary. We can't even work out at the moment whether she could get an online visa (that would make a big difference) and what price it would be.